Question

The maximum lifespan of a dog in years is
A) 5
B) 10
C) 15
D) 20

Answer 1

Hint The changes in care that an older dog often needs can lead an inexperienced owner to turn the animal over to a shelter or rescue organization. As with humans, the past few years often bring changes in a dog's ability to hear, see, and move around easily.

Complete answer:
All breeds of dogs are the same species, but the age at very different rates. There is a variation due to:
Size: The bigger the dog, the less it will live.
Gender: In general, females tend to live a little longer than males.
Health Problems in Purebred Dogs: Purebred dogs have more health problems, which reduces their lifespan.
So the lifespan of the dog changes and on average the lifespan of the dog is around 20 years.

Additional information:
Dogs' aging profile varies with their adult size (often determined by breed): small dogs typically live over 15 to 16 years, medium and large dogs typically 10 to 13 years old, and some dog breeds giants like the Mastiffs, often between 7 and 8 years old. Nonprofit groups have sprung up in response to the growing need to save older dogs. The latter mature at a slightly older age than the smaller breeds: giant breeds become adults around two years old, compared to the norm of around 13-15 months for other breeds.

So, the correct answer is ‘20 years’.

Note: Aging in dogs (Canis lupus familiaris) varies from breed to breed and affects the health and physical capabilities of the dog. Skin conditions, appetite, and energy levels often deteriorate with geriatric age, and medical conditions such as cancer, kidney failure, arthritis, dementia, joint conditions, and other signs of old age may appear.