Stubborn
Independent
Energetic
Alert
Courageous
Intelligent
Confident
Friendly
Inquisitive
Bold
Cheerful

Affectionate
Courageous
Good-natured
Calm
Dignified
Protective

Patterjacks are heavy shedders, but regular brushing can help manage shedding and promote a healthy coat.

American Mastiffs are moderate shedders, but regular brushing can reduce shedding and maintain coat health.

Patterjacks are decent watchdogs - they'll alert their owner if something seems amiss.

American Mastiffs make excellent watchdogs - they're vocal and protective of their territory.

United States

United States

Patterdale Terrier, Jack Russell

English Mastiff, Anatolian Mastiff

Unknown

1990s

Brown
Amber

Brown
Amber

Black
Isabella

Black

Black
Brown
Red
Sable
Brindle
White

Fawn
Brown
Brindle

Patterjacks have short coats.

American Mastiffs have medium-length coats.

A Patterjack can have a litter of 4-8 puppies on average. However, it's worth noting that the size of the litters can vary greatly. Factors that can influence litter size include the health of the mother, breeding history, and genetics.

An American Mastiff can have a litter of 10-12 puppies on average. However, it's worth noting that the size of the litters can vary greatly. Factors that can influence litter size include the health of the mother, breeding history, and genetics.

Patterjacks are highly adaptable and versatile, making them excellent companions for families and individuals of all lifestyles.

American Mastiffs have average adaptability to changes in lifestyle and living environments compared to other breeds.

Patellar Luxation
Canine Hip Dysplasia
Glaucoma
Legg-Calve Perthes Disease

Joint Dysplasia

Ear Infections
Otitis Interna and Media

Skin Problems
Foreleg Lameness
Eye Problems
Hyperthyroidism

Ophthalmic And Ear Exam
Regular Full Physical Examination By Veterinarian
Ear Tests and Myringotomy Tests
MRI Scan
X-rays or other radiographic imaging

Eye Examinations
Serum Chemistry
Regular Full Physical Examination By Veterinarian
Full Blood Work
Blood Chemistry
Diagnostic Imaging
Skin Scrapings and Biopsies

Patterjacks' high energy levels make them unsuitable for a low-key dog, choose accordingly.

American Mastiffs are a good choice for a low-key lifestyle due to their low energy levels.

Patterjacks require significant physical activity and suit those with an active lifestyle.

American Mastiffs need only a small amount of physical activity, ideal for busy or elderly people or those with limited space.

Patterjacks are active and require sufficient sleep to stay healthy.

American Mastiffs are known for their relaxed and calm nature and enjoy long periods of sleep.

Patterjacks bark moderately when necessary and may also bark due to certain triggers like fear, alarm, boredom, greeting, separation anxiety and compulsive barking.

American Mastiff dogs are generally less vocal than other breeds and only bark when necessary, such as to alert their owner or communicate.

Chase, Fetch, Ball, Long walks, Playing fetch, Cuddling, Tug-of-war, Ball throwing, Walking, Doggy day care, Play, Walks, Walk, Run, Sleep, Beach, Playing, Teaching, Go to Beach, Cuddles

Fetch, Play

Patterjacks are high-energy dogs. They need mental as well as physical exercise. These dogs require a lot of your involvement and without it they can, and will, become problematic dogs.

American Mastiffs are medium-energy dogs and typically enjoy socializing and playing casual or even sustained games of chase with other dogs. They may also have occasional periods of barking or racing around the house.

There's really no limit to how far you walk your dog as long as they're comfortable. For Patterjack, it's at least 14 miles / week. Just remember to build distance and stamina gradually over time.

There's really no limit to how far you walk your dog as long as they're comfortable. For American Mastiff, it's at least 10 miles / week. Just remember to build distance and stamina gradually over time.

In general most Patterjacks usually need at least 120 minutes of exercise daily. This can be spread across the day and include all sorts of high-energy activities, like walking, running and playing.

In general most American Mastiffs usually need at least 60 minutes of exercise daily. This can be spread across the day and include all sorts of high-energy activities, like walking, running and playing.

The Patterjack has low grooming needs and is easy to maintain.

The American Mastiff requires an average amount of grooming compared to other breeds.

Pin Brush
Comb
Deshedder
Nail Clipper

Pin Brush
Slicker Brush
Deshedder
Nail Clipper

For an average 12-16 pound (5 - 7 kg) Patterjack feed 2 cups daily. But, keep in mind, the amount you feed is going to be dependent on the quality of the food you are feeding.

For an average 160-200 pound (73 - 91 kg) American Mastiff feed 4 cups daily. But, keep in mind, the amount you feed is going to be dependent on the quality of the food you are feeding.

The average cost of a Patterjack is somewhere $2.10 - $4.20 per day.

The average cost of an American Mastiff is somewhere $3.90 - $4.20 per day.

The average per month expenses of a Patterjack is between $42 - $49. This makes an average of $504 - $588 per year. It will be on the higher side when the dog is still small because it will need more frequent visits to the vet, shots.

The average per month expenses of an American Mastiff is between $112 - $126. This makes an average of $1344 - $1512 per year. It will be on the higher side when the dog is still small because it will need more frequent visits to the vet, shots.

This breed is sensitive to its environment and best suited for patient and understanding families with a consistent routine.

American Mastiffs have average emotions and adapt well to different situations.

The Patterjack is not suitable for apartments and requires a large yard to thrive. Pent-up energy in small spaces can lead to destructive behavior.

American Mastiffs are good apartment dogs as long as they get enough exercise and stimulation outside of the apartment.

Patterjacks are friendly and active companions, and can be good family pets, though their friendliness towards other dogs may vary.

American Mastiffs are average in their friendliness towards other dogs, and socialization can help.

Patterjacks are a playful breed that needs daily playtime to be happy.

American Mastiffs have an average level of playfulness, enjoying playtime like most dogs but not excessively so.

Patterjacks may require more time and patience to learn commands, but with consistency, they can be trained.

American Mastiffs are popular for their ease of training and quick learning ability.