Veterinarians spend their days working with dogs of all shapes, sizes, and temperaments.
Through years of experience, they’ve learned which breeds tend to have grumpier personalities or challenging behaviors that make them less ideal as pets.
While every dog is an individual, certain breeds consistently show traits that even experienced vets prefer to avoid in their own homes.
The information in this article reflects general observations from veterinary professionals and does not represent every individual dog within these breeds.
Always research thoroughly and consider your lifestyle before choosing any dog.
1. Chow Chow
With a lion-like mane and an unmistakable blue-black tongue, the Chow Chow looks majestic but carries a reputation for being standoffish.
These dogs are naturally suspicious of strangers and can be fiercely protective of their territory.
Their independent streak makes training a real challenge, and they’re known to be stubborn when they don’t want to cooperate.
Many vets report that Chow Chows can become aggressive during examinations, making routine checkups stressful for everyone involved.
2. Dachshund
Don’t let those adorable short legs fool you.
Dachshunds were bred to hunt badgers, which required courage and a feisty attitude that persists today.
They’re notorious for being snappy, especially when their personal space is invaded or when they’re in pain from back problems.
Veterinarians often see these little dogs as unpredictable biters during exams, requiring extra caution and muzzles more frequently than you’d expect from such a small breed.
3. Chihuahua
Weighing barely more than a bag of flour, Chihuahuas pack enormous attitudes into tiny bodies.
These pint-sized pups are infamous for their Napoleon complex, often acting aggressive toward larger dogs and unfamiliar people.
Their tendency to shake, yap incessantly, and snap without warning makes them challenging patients at veterinary clinics.
Many vets admit these miniature dogs cause more stress than breeds ten times their size, despite their cute appearance and popularity.
4. Akita
Originating from Japan, Akitas were bred as guard dogs and hunters of large game like bears.
That heritage shows in their dominant, protective nature and low tolerance for other animals.
They’re intensely loyal to their families but deeply distrustful of outsiders, including veterinary staff.
Their size and strength combined with potential aggression make them intimidating patients, requiring experienced handlers and sometimes sedation for even basic procedures that other breeds tolerate easily.
5. Rottweiler
Built like tanks with powerful jaws, Rottweilers command respect wherever they go.
While they can be loving family companions, their guarding instincts run deep and can surface unexpectedly.
Veterinarians report that Rottweilers often become defensive during medical procedures, especially when experiencing pain or discomfort.
Their sheer strength means even a momentary lapse in temperament can result in serious injuries, making many vets hesitant to own one despite their intelligence.
6. Pekingese
Bred exclusively for Chinese royalty, Pekingese still carry themselves with imperial arrogance centuries later.
These flat-faced dogs are notoriously stubborn and dislike being handled by anyone outside their chosen circle.
Their breathing problems due to their brachycephalic structure add stress to veterinary visits, making them grumpy and difficult to examine.
Many vets find their combination of health issues and cranky attitude exhausting, preferring breeds with easier-going personalities and fewer medical complications.
