Quick Links: Table of Contents
- Mastiff Versus Sealyham Terrier: Introduction
- Mastiff versus Sealyham Terrier: Overview
- Mastiff versus Sealyham Terrier: Comparison Table
- The Most Remarkable Differences Between the Mastiff and the Sealyham Terrier
- The Similarities Between the Mastiff and the Sealyham Terrier
- Size (Weight and Height) of Mastiff versus Sealyham Terrier
- Lifespan of Mastiff versus Sealyham Terrier
- Temperament of the Sealyham Terrier Versus the Mastiff
- The Intelligence of the Mastiff versus the Intelligence of the Sealyham Terrier
- The Popularity of Mastiff versus Popularity of Sealyham Terrier
- Health Problems of Mastiff versus Health Problems of Sealyham Terrier
- Tolerates Being Alone: Mastiff versus Sealyham Terrier
- Do Mastiffs shed more than Sealyham Terriers?
- Which one drools more, the Mastiff or the Sealyham Terrier
- Which is Easier to Groom, the Mastiff or the Sealyham Terrier?
- Does the Mastiff Have a Higher Prey Drive than the Sealyham Terrier?
- Do Mastiffs Bark and Howl? What about Sealyham Terriers?
- Can Mastiffs Tolerate Cold Weather? And can Sealyham Terriers Tolerate Cold Weather?
- Wanderlust Potential: Mastiff vs. Sealyham Terrier
- Can Mastiffs Tolerate Hot Weather? Can Sealyham Terriers Tolerate Hot Weather?
- Which Dog Breed is more Dog-Friendly, the Mastiff or the Sealyham Terrier?
- Are Mastiffs good family dogs? What about Sealyham Terriers?
- How Kid-friendly are Mastiffs and Sealyham Terriers?
- Is the Mastiff Easier to Train than the Sealyham Terrier?
- Other Dog Breeds That are Similar to the Mastiff
- Other Dog Breeds That are Similar to the Sealyham Terrier
- Other Breed Comparisons that Might Interest You
- Conclusion: Mastiff versus Sealyham Terrier. Which One is a Better Pet?
Mastiff Versus Sealyham Terrier: Introduction
Are you thinking of getting a new pet dog, and you have narrowed down your choices to the Mastiff and the Sealyham Terrier? Well, you have come to the right place. Because in this article, we will provide you with a detailed comparison of these two dog breeds to help you decide which of the Mastiff and the Sealyham Terrier better suits you.
We will provide you a detailed discussion and comparison of dog attributes such as intelligence, price, general health, friendliness, etc, for both the Mastiff and the Sealyham Terrier.
Furthermore, we will let you know which one of the Mastiff and the Sealyham Terrier is better suited for new dog owners, for owners with kids, for owners that live in apartments, for owners with dog allergies, etc.
Importantly, we did some analysis and calculation and we obtained a number that we call the Better-Pet Score™ for both the Mastiff and for the Sealyham Terrier. The dog breed with the higher Better-Pet score is the `better` pet. We hope that these Better-Pet Scores will provide you with more insight into deciding which pet to get between the Mastiff and the Sealyham Terrier.
Our only goal here is to help you make a well-thought-out decision on your next long-term companion, be it the Mastiff or the Sealyham Terrier.
Mastiff versus Sealyham Terrier: Overview
A very important difference between the Mastiff and the Sealyham Terrier is the size difference between the two dog breeds. The Mastiff is a giant-sized dog while the Sealyham Terrier is a small-sized dog.
Furthermore, the Mastiff belongs to the Working Dogs group. Working Dogs were developed to assist humans in some capacity – including pulling sleds and carts, guarding flocks, guarding homes, and protecting their families. Breeds in the Working Group are known for their imposing stature, strength, intelligence, and fearless. Because of their size and strength, working dogs require a structured home life and firm, fair, consistent training by someone who can provide leadership without resorting to anger or physical force.
On the other hand, the Sealyham Terrier belongs to the Terrier Dogs group. Terrier Dogs were originally bred to go underground to hunt rodents and other small wild animals (vermin). Terriers come in a wide range of sizes and shapes, but all terriers are energetic, highly intelligent, and territorial. Terries also have the tendency to escape. They require a securely fenced yard.
Mastiff versus Sealyham Terrier: Comparison Table
The table below compares the Mastiff to the Sealyham Terrier based on different important factors such as Price, Health, Kid-friendliness, etc.
When a dog breed scores higher for a factor than the other dog breed, the box of the breed that scores higher is shaded green and the box of the breed that scores lower is shaded red. When there is no difference between the breeds for a particular factor then the box is shaded gray for both pets. Also, when the factor is not important in picking a pet, or when the factor cannot be compared between two pets, the box for the factor is shaded gray for both pets
Most of the factors in the table for each dog breed are ranked on a scale of 1 to 5. “1” means “worst”, and “5” means “best”.
However, some factors such as “Price”, “Average Lifespan”, etc. cannot be on a scale of 1 to 5, so they are not on a scale of 1 to 5 in the comparison table.
Later in this article, we will further explain each factor as it applies to the Mastiff and the Sealyham Terrier
| Factor | Mastiff | Sealyham Terrier |
|---|---|---|
| Good For Novice Owners | 1/5 | 4/5 |
| Tolerates Hot Weather | 1/5 | 3/5 |
| Tendency NOT to Wander | 5/5 | 3/5 |
| Weight | 130 to 220 pounds | 22 to 24 pounds |
| Adapts Well To Apartment Living | 2/5 | 4/5 |
| Dog Friendly | 2/5 | 4/5 |
| Friendly Toward Strangers | 2/5 | 3/5 |
| Intelligence | 2/5 | 4/5 |
| Low Prey Drive | 4/5 | 4/5 |
| Does NOT Bark or Howl | 4/5 | 2/5 |
| Height | 27 to 32 inches tall at the shoulder | Up to 10 inches tall at the shoulder |
| Easygoing | 3/5 | 2/5 |
| Tolerates Being Alone | 3/5 | 2/5 |
| Does NOT Shed | 3/5 | 2/5 |
| Easy To Groom | 3/5 | 1/5 |
| General Health | 3/5 | 5/5 |
| Easy To Train | 3/5 | 3/5 |
| NOT Rambunctious | 3/5 | 2/5 |
| Calmness/ Low Vigor | 3/5 | 4/5 |
| Tolerates Cold Weather | 4/5 | 4/5 |
| Potential NOT to Gain Weight | 2/5 | 3/5 |
| Does NOT chew on things | 2/5 | 4/5 |
| Minimal Exercise Needs | 2/5 | 2/5 |
| Potential For Playfulness | 4/5 | 4/5 |
| Affectionate With Family | 5/5 | 4/5 |
| Kid-Friendly | 5/5 | 4/5 |
| Does NOT Drool | 1/5 | 3/5 |
| Life Span | 6 to 10 years | 12 to 14 years |
| Average Lifespan | 8.0 years | 13.0 years |
| Average Price | $1740 | No Data |
| Price Range | $1100 – $2200 | No Data |
| Temperament Score | 100.0 percent | 100.0 percent |
| Common Health Problems and Recommended Health Tests |
|
|
| Popularity out of 200 Dog Breeds | 28 | 157 |
| Intelligence Rank (out of 130 Dog Breeds) | 72 | 56 |
Next, we added the scores of the factors that can be added together for the Mastiff in the table (that is, `Ease of Grooming` score + `General Health` score + `Calmness` score + …etc) and we compared it to the corresponding total score for the Sealyham Terrier. We call these total scores the Better-Pet Scores, as we mentioned earlier. We called this score the Better-Pet score because the better dog breed will have a higher score. This is because the pet will the higher score will have minimal needs and be easier to have as a pet.
The Better-Pet score for the Mastiff is 72 out of 125 while the Better-Pet score for the Sealyham Terrier is 80 out of 125.
Based on their Better-Pet scores, the Sealyham Terrier is a better pet than the Mastiff. So, you should get the Sealyham Terrier!
Although we have done our best to analyze these two dog breeds in a very unbiased way, however, we will like to let you know that there are some dog attributes that cannot be assigned a number for comparison. We cannot put a number on how cute a dog breed is, for example. Beauty is in the eye of the beholder.
Also, the dog breed that best suits you will depend on your peculiar lifestyle, your taste, and your priorities, which we do not know. So, for you to decide on which breed is right for you, read through the rest of the article to further understand both the Mastiff and the Sealyham Terrier so that you can make your own well-informed decision on which pet to get.
The Most Remarkable Differences Between the Mastiff and the Sealyham Terrier
Below is a list of where the Mastiff and the Sealyham Terrier are most different:
The Similarities Between the Mastiff and the Sealyham Terrier
The Mastiff and the Sealyham Terrier are very similar in certain aspects. Below is the list of where the Mastiff and the Sealyham Terrier are most similar:
Size (Weight and Height) of Mastiff versus Sealyham Terrier
Now, let us discuss the difference in size between the Mastiff and the Sealyham Terrier.
Mastiffs weigh 130 to 220 pounds when fully grown. Mastiffs are 27 to 32 inches tall at the shoulder when fully grown.
On the other hand, Sealyham Terriers weigh 22 to 24 pounds when fully grown. Sealyham Terriers are Up to 10 inches tall at the shoulder when fully grown.
Lifespan of Mastiff versus Sealyham Terrier
The lifespan of Mastiffs is between 6 to 10 years. The average lifespan of Mastiffs is 8.0 years.
The lifespan of Sealyham Terriers is between 12 to 14 years. The average lifespan of Sealyham Terriers is 13.0 years.
Sealyham Terriers live longer than Mastiffs.
Temperament of the Sealyham Terrier Versus the Mastiff
The Mastiff has the same temperament score as the Sealyham Terrier.
This is because the temperament score for the Mastiff is 100.0 percent while the temperament score for the Sealyham Terrier is 100.0 percent, according to the American Temperament Test Society (ATTS).
The American Temperament Test Society (ATTS) is a non-profit organization whose mission is to provide fair and objective evaluations of the temperaments of dog breeds.
Dog breeds with low temperament scores tend to show unprovoked aggression, they easily panic without quickly recovering from the panic, and they tend to avoid people. However, dog breeds with high temperament scores are not aggressive and are not shy. Also, these dogs are generally friendly and are protective of their owners.
The average temperament score across all dog breeds (over 250 breeds) is 83.7 percent.
With its temperament score of 100.0 percent, the Mastiff has an above-average temperament compared to other dog breeds.
With its temperament score of 100.0 percent, the Sealyham Terrier has an above-average temperament compared to other dog breeds.
The ATTS obtained the temperament scores of the Mastiff and the Sealyham Terrier by measuring the temperaments of 8 Mastiffs and 1 Sealyham Terriers.
The Intelligence of the Mastiff versus the Intelligence of the Sealyham Terrier
| Mastiff | Sealyham Terrier | |
|---|---|---|
| Intelligence Rank | 72 out of 130 dog breeds | 56 out of 130 dog breeds |
| Trainability | Tend To Learn New Commands After 80 To 100 Repetitions Or More! | Tend To Learn New Commands After 40 To 80 Repetitions! |
Professor Stanley Coren, the famous psychology/neuropsychological professor and, dog lover/trainer measured and ranked the intelligence of about 130 different dog breeds.
According to Prof. Stanley Coren, the total intelligence that a dog demonstrates is the addition of three types of intelligence. These intelligence types are:
Prof. Coren showed that the Working/Obedience Intelligence of different dog breeds can be measured reliably. Thus, he was able to rank different dog breeds based on their Working/Obedience Intelligence.
This is important because according to Prof. Coren, 51 percent of a dog`s intelligence comes from its genes while 49 percent of a dog`s intelligence comes from the dog`s environmental circumstances.
To rank the intelligence of dog breeds, Prof. Coren employed the help of 208 dog obedience judges in North America to fill out a detailed survey on dog obedience. This number represented more than half of all of these judges in North America at the time. He also employed 63 veterinarians and 14 guard dog experts to collect data on the personality of different dog breeds.
Prof. Coren found that the Mastiff has an obedience intelligence rank of 72 out of 130 dog breeds. The Mastiff belongs to the `Lowest Degree of Working/Obedience Intelligence Dogs` category. This means that Mastiffs tend to learn new commands after 80 to 100 repetitions or more!.
The Sealyham Terrier has an obedience intelligence rank of 56 out of 130 dog breeds. The Sealyham Terrier belongs to the `Fair Working/Obedience Intelligence Dogs` category. This means that Sealyham Terriers tend to learn new commands after 40 to 80 repetitions!.
The Sealyham Terrier is more intelligent than the Mastiff.
However, Prof. Coren noted that a dog should not be judged based on its intelligence alone, that other factors such as sociability, adorability, and compatibility with the owner are other very important factors that new dog owners need to consider when deciding on a new dog.
The Popularity of Mastiff versus Popularity of Sealyham Terrier
Every year, the American Kennel Club (AKC) publishes information on how popular a dog breed is in that particular year. The AKC gets the popularity information of a breed from how many dogs of that breed the owners register with the AKC every year. The AKC collects this data for about 200 dog breeds. The AKC collects this data for purebred dogs only(no mixed or hybrid dogs).
The graphs and the table below show the popularity of the Mastiff and the Sealyham Terrier over the years.
Based on the AKC popularity data over the years, the Mastiff is more popular with dog owners than the Sealyham Terrier. This is because, over the years, the average popularity of the Mastiff is 28 out of about 200 dog breeds while the average popularity of the Sealyham Terrier is 157 out of about 200 dog breeds.
Popularity of Mastiff
Popularity of Sealyham Terrier
| Year | Mastiff Popularity Rank | Sealyham Terrier Popularity Rank |
|---|---|---|
| 2013 | 26 | 158 |
| 2014 | 26 | 169 |
| 2015 | 25 | 158 |
| 2016 | 28 | 155 |
| 2017 | 28 | 150 |
| 2018 | 29 | 164 |
| 2019 | 32 | 154 |
| 2020 | 33 | 148 |
Health Problems of Mastiff versus Health Problems of Sealyham Terrier
Every dog breed has its own set of health problems that it has a tendency to develop. There is nothing like a perfect dog breed.
Both the Mastiff and the Sealyham Terrier are prone to certain genetic health conditions. The Orthopedic Foundation for Animals (OFA) is the organization that keeps track of health problems in dogs. Based on the extensive records that the OFA keeps, the OFA knows what health problems each dog breed is naturally prone to develop. Hence, the OFA recommends which health screening that breeders should perform on a dog breed to make sure that the breeders won`t breed `defective` dog parents that can pass down defective genes to their puppy offspring.
The more health problems a dog breed is prone to develop, the more health tests the OFA will recommend for that dog breed.
Based on our review of OFA records, we found that the Mastiff is prone to more genetic health problems than the Sealyham Terrier.
This is because the OFA recommends more screening health tests for the Mastiff than for the Sealyham Terrier.
7 health tests are recommended for Mastiff while 2 tests are recommended for the Sealyham Terrier.
Below is a detailed discussion of health problems in Mastiffs and in Sealyham Terriers.
Mastiff Health Problems
Mastiffs are genetically prone to certain health problems. However, breeders can reduce the chances of producing Mastiff puppies with genetic defects by making sure that a puppy`s parents are free from genetic health problems before allowing the parent to make puppies.
The OFA provides breeders recommendations on which genetic diseases that breeders should screen their dog parents and puppies for.
If you want a Mastiff puppy that will grow up to be healthy, make sure that your Mastiff breeder screens your puppy or your puppy`s parents for the health problems that the OFA recommends for your puppy`s breed. This will increase the chances that your puppy is free from genetic defects.
The following are the health tests that Orthopedic Foundation for Animals (OFA) recommends that breeders should screen Mastiffs for:
You can find out more about OFA`s recommended tests for Mastiffs here.
Sealyham Terrier Health Problems
Sealyham Terriers are genetically prone to certain health problems. However, breeders can reduce the chances of producing Sealyham Terrier puppies with genetic defects by making sure that a puppy`s parents are free from genetic health problems before allowing the parent to make puppies.
The OFA provides breeders recommendations on which genetic diseases that breeders should screen their dog parents and puppies for.
If you want a Sealyham Terrier puppy that will grow up to be healthy, make sure that your Sealyham Terrier breeder screens your puppy or your puppy`s parents for the health problems that the OFA recommends for your puppy`s breed. This will increase the chances that your puppy is free from genetic defects.
The following are the health tests that Orthopedic Foundation for Animals (OFA) recommends that breeders should screen Sealyham Terriers for:
You can find out more about OFA`s recommended tests for Sealyham Terriers here.
More Discussions on Health Problems in Mastiffs and Sealyham Terriers
Based on our analysis of data from the Orthopedic Foundation for Animals, of all known genetic health problems in dogs, the health problem that is most commonly seen in the Mastiff Breed is Canine Multifocal Retinopathy problems.
This is because the Mastiff ranks 3 out of 6 dog breeds for Canine Multifocal Retinopathy problems. In fact, in a health test conducted on 891 Mastiffs, 14 of them had Canine Multifocal Retinopathy problems.
The genetic diseases that were found to commonly occur in Mastiffs, and how common these diseases are in Mastiffs relative to other dog breeds, are given below:
Based on our analysis of data from the Orthopedic Foundation for Animals, of all known genetic health problems in dogs, the health problem that is most commonly seen in the Sealyham Terrier Breed is Primary Lens Luxation problems.
This is because the Sealyham Terrier ranks 4 out of 17 dog breeds for Primary Lens Luxation problems. In fact, in a health test conducted on 542 Sealyham Terriers, 10 of them had Primary Lens Luxation problems.
The genetic diseases that were found to commonly occur in Sealyham Terriers, and how common these diseases are in Sealyham Terriers relative to other dog breeds, are given below:
The table below lists the common health problems in Mastiff and in Sealyham Terrier and the rank (prevalence), compared to other dogs, of these health problems in the Mastiff and the Sealyham Terrier:
| Disease | Mastiff Rank | Sealyham Terrier Rank |
|---|---|---|
| Canine Multifocal Retinopathy problems | 3 out of 6 dog breeds | Not Common |
| Cystinuria problems | 3 out of 6 dog breeds | Not Common |
| Shoulder problems | 9 out of 22 dog breeds | Not Common |
| Progressive Retinal Atrophy problems | 12 out of 32 dog breeds | Not Common |
| Elbow problems | 26 out of 144 dog breeds | Not Common |
| Advanced Cardiac problems | 39 out of 71 dog breeds | Not Common |
| Hips problems | 39 out of 198 dog breeds | Not Common |
| Eyes problems | 43 out of 182 dog breeds | Not Common |
| Degenerative Myelopathy problems | 49 out of 70 dog breeds | Not Common |
| Congenital Cardiac problems | 53 out of 159 dog breeds | Not Common |
| Thyroid problems | 72 out of 115 dog breeds | Not Common |
| Patella problems | 131 out of 145 dog breeds | Not Common |
| Primary Lens Luxation problems | Not Common | 4 out of 17 dog breeds |
*To learn more about each of these diseases, go to OFA.org and search for the disease.
Again, most of these health problems can be prevented through health screening. Responsible breeders screen male and female dog parents for genetic problems. These breeders will only breed dogs that are free of genetic defects. That way, there is little or no chance that their puppies will grow up to have genetic health problems. Always ask a breeder for the list of health tests the breeder screens their dogs for before buying a puppy from such a breeder.
Tolerates Being Alone: Mastiff versus Sealyham Terrier
Mastiffs can be left alone only for a short time.
Sealyham Terriers do not like to be left alone.
Do Mastiffs shed more than Sealyham Terriers?
Mastiffs shed moderately.
Sealyham Terriers shed. They are not recommended for people with dog allergies.
Which one drools more, the Mastiff or the Sealyham Terrier
Mastiffs have a very high tendency to drool.
Sealyham Terriers drool moderately.
Which is Easier to Groom, the Mastiff or the Sealyham Terrier?
Mastiffs are moderately easy to groom.
Sealyham Terriers require a lot of grooming and they are not very easy to groom.
Does the Mastiff Have a Higher Prey Drive than the Sealyham Terrier?
Mastiffs have a very low prey drive. This means they get won`t chase after smaller pets. They tend to get along well with other pets.
Sealyham Terriers have a very low prey drive. This means they get won`t chase after smaller pets. They tend to get along well with other pets.
Do Mastiffs Bark and Howl? What about Sealyham Terriers?
Mastiffs are not very vocal. They do not tend to bark and howl.
Sealyham Terriers are highly vocal. They have the tendency to bark and howl.
Can Mastiffs Tolerate Cold Weather? And can Sealyham Terriers Tolerate Cold Weather?
Mastiffs can very well tolerate cold weather.
Sealyham Terriers can very well tolerate cold weather.
Wanderlust Potential: Mastiff vs. Sealyham Terrier
Mastiffs do not have the potential to wander after things that capture their attention. They tend to stay around where you leave them.
Sealyham Terriers have a moderate tendency to wander. This means that they sometimes get distracted by other animals or objects.
Can Mastiffs Tolerate Hot Weather? Can Sealyham Terriers Tolerate Hot Weather?
Mastiffs cannot tolerate hot weather. They are not suited for hot environments.
Sealyham Terriers can tolerate hot weather as long as the weather is not too hot.
Which Dog Breed is more Dog-Friendly, the Mastiff or the Sealyham Terrier?
Mastiffs do not get along well with other dogs.
Sealyham Terriers get along very well with other dogs.
Are Mastiffs good family dogs? What about Sealyham Terriers?
Mastiffs are great family dogs. They are very affectionate with family.
Sealyham Terriers are great family dogs. They are very affectionate with family.
How Kid-friendly are Mastiffs and Sealyham Terriers?
Mastiffs get along well with kids. They are kid-friendly.
Sealyham Terriers get along well with kids. They are kid-friendly.
Is the Mastiff Easier to Train than the Sealyham Terrier?
Mastiffs are fairly easy to train.
Sealyham Terriers are fairly easy to train.
Is the Mastiff Better for Apartment Owners than the Sealyham Terrier?
Mastiffs do not adapt well to apartment living.
Sealyham Terriers adapt very well to apartment living.
Which is Better for New Dog Owners, the Mastiff or the Sealyham Terrier?
Mastiffs are not the best dogs for new dog owners.
Sealyham Terriers are very good for new dog owners.
Other Dog Breeds That are Similar to the Mastiff
Furthermore, there are other dog breeds that are very similar to the Mastiff that you can consider on your quest to get the best pet.
We crunched the numbers and found that the following dog breeds have similar personality and temperament as the Mastiff:
Other Dog Breeds That are Similar to the Sealyham Terrier
Furthermore, there are other dog breeds that are very similar to the Sealyham Terrier that you can consider on your quest to get the best pet.
We crunched the numbers and found that the following dog breeds have similar personality and temperament as the Sealyham Terrier:
Other Breed Comparisons that Might Interest You
You may also be interested in how the Mastiff and how the Sealyham Terrier compares to other breeds. So, see below the comparison of the Mastiff and of the Sealyham Terrier to other breeds:
Mastiff Versus Other Dog Breeds
Mastiff versus Cane Corso Mastiff versus Norwegian Lundehund Mastiff versus Kerry Blue Terrier Mastiff versus Australian Shepherd Mastiff versus Spinone Italiano Mastiff versus Glen of Imaal Terrier Mastiff versus Petit Basset Griffon Vendeen Mastiff versus Patterdale Terrier Mastiff versus Boxer Mastiff versus Greyhound Mastiff versus Caucasian Shepherd Dog Mastiff versus Papipoo Mastiff versus Airedale Terrier Mastiff versus Flat-Coated Retriever Mastiff versus Boerboel Mastiff versus Keeshond Mastiff versus Kishu Ken Mastiff versus Chinese Crested Mastiff versus Chow Chow Mastiff versus Puli Mastiff versus Soft Coated Wheaten Terrier Mastiff versus Chesapeake Bay Retriever Mastiff versus Yorkipoo Mastiff versus Dogue de Bordeaux Mastiff versus Frenchton
Sealyham Terrier Versus Other Dog Breeds
Sealyham Terrier versus Bich Poo Sealyham Terrier versus Maltese Sealyham Terrier versus Chihuahua Sealyham Terrier versus Bolognese Sealyham Terrier versus Petit Basset Griffon Vendeen Sealyham Terrier versus Swedish Vallhund Sealyham Terrier versus Goldador Sealyham Terrier versus American Pit Bull Terrier Sealyham Terrier versus Bloodhound Sealyham Terrier versus Morkie Sealyham Terrier versus Shiba Inu Sealyham Terrier versus Catahoula Leopard Dog Sealyham Terrier versus Wirehaired Pointing Griffon Sealyham Terrier versus Bracco Italiano Sealyham Terrier versus Chi-Poo Sealyham Terrier versus Vizsla Sealyham Terrier versus Whippet Sealyham Terrier versus English Toy Spaniel Sealyham Terrier versus Miniature Pinscher Sealyham Terrier versus Bernese Mountain Dog Sealyham Terrier versus Sussex Spaniel Sealyham Terrier versus Borzoi Sealyham Terrier versus Cockalier Sealyham Terrier versus Goldendoodle Sealyham Terrier versus Mal Shi
Conclusion: Mastiff versus Sealyham Terrier. Which One is a Better Pet?
In summary, there is nothing like a better dog breed or a worse dog breed. The important question to ask is which dog breed better matches your interests and lifestyle. We hope our discussion above will help you in deciding which dog breed between the Mastiff and the Sealyham Terrier better suits you and your family.