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Maximum life span of a dog in years is
A. 5
B. 10
C. 15
D. 20

Last updated date: 20th Jun 2024
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Hint: Dogs (Canis lupus) are domestic animals of the Canidae family. It is a subspecies of wolf and is related to foxes and jackals. Life span is the time from the birth of an organism to its death.

Complete answer: Every organism has a specific life span, i.e. the time period from the birth to death. Ageing is common in organisms that lead to progressive changes that might increase the risk of diseases, debility, or even death. Dogs are omnivorous (organisms that feed on both plants as well as animals) domestic animals. They are viviparous (an organism that does not lay eggs but give birth to young ones) mammal with an average life expectancy (it is a statistical measure of how long an organism is expected to live based on year of birth, current age, and demographic factors including gender) of up to 10-13 years. However, hybrid dogs have more life expectancy compared to the pure breed. The lifespan of dogs also depends on a few factors like size, dogs with small size are said to live for more years compared to the larger ones; it is also said that female dogs live more than male dogs. Some hybrid breeds of dogs can live for approximately 20 years. Chihuahuas are mixed breed dogs that have a maximum of 20 years of life span.
Hence, the correct option is D.

Note: The dog that lived for a maximum of years was an Australian cattle dog named Bluey who lived for almost 30 years. The second oldest dog who lived for 28 years was a beagle named Butch. In mixed breed dogs as the genetic makeup is not the same compared to purebred dogs, the risk of having the hierarchical serious genetic disease or any other unwanted trait is lessened (rich genetic pool) which in turn increases their life span.