Question

Maximum life span of dog is 

A. 5 years 

B. 10 years

C. 15 years

D. 20 years

Answer 1

Hint: The average length of life of a kind of organism or of a material object especially in a particular environment or under specified circumstances. 

Or we can say it is the duration of existence of an individual.

Life span of all living organisms differs from each other.

For example, the lifespan of a human being is 100 years.

Complete answer:

In order to solve this question we need to learn more about life span.

Life span:  It is the length of time for which a person or animal lives or a thing functions.

Life expectancy: life expectancy refers to the number of years a person can expect to live. 

Life expectancy is based on criteria in which an estimation of the average age that members of a particular group will be when they die.

Life span of all the organisms differs from each other.

For example: 

Man = average 70 years

Parrot = average 140 years

Tortoise = average 200 years

Banyan tree = average 200 years

Dogs: Dogs are domesticated mammals.

They have been bred by humans for a long time.

They were the first animals to be domesticated. 

Dogs are considered as the most faithful and best friends of human beings.

The lifespan of dogs varies widely among breeds, but for most the average longevity, the age at which half the dogs in a population have died and half are still alive, ranges from 10 to 13 years. 

But some dogs may live beyond the average age.

The breed with the shortest life span is the Dogue de Bordeaux with an average longevity of about 5.2 years.

The longest-lived breeds, including border terrier, have a median longevity of 14 to 15 years. 

The longest-lived dog was an Australian cattle dog that died in 1939 at 29.5 years of age. 

So, we can say that the correct answer is option C. 15 Years. 

Note: Life span is the period from birth to death.

Lifespan in general is determined by tradeoffs between survival and reproduction.

Wolves, the ancestors of dogs, can live 15-20 years, roughly twice as long as comparable sized dogs.

They need to form pairs and establish a territory before breeding.