What is the Average Lifespan of a Deer?

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Nature dictates that every living organism has to die. While the length of life in which the said organism is said to live is the lifespan, the deer have an average lifespan of 10-12 years. 

This however depends on a handful of factors; external and internal. Internal factors may include infant mortality, while the external factors are aspects such as predator relationship. It is rare to hear of a deer dying of old age, but it is not impossible. In detail, these factors are explained below.

Factors that Influence a Deer’s Lifespan

Hunting Pressure

They are native animals in most of their inhibiting regions, and they spread across the globe. Each geographical region has unique hunting approaches taken by the hunters; some have extreme hunting pressure while others no pressure at all. It is logical to assume that areas with minimal hunting pressure are where a deer will survive and live longer. Some regions are very aggressive in the hunting techniques they use, resulting in a higher yield.


The physical structure between a male and a female is also a player in a deer’s lifespan. A buck, which is a male deer, is more muscular than the doe. The choice of either taking down a buck or doe lies with the hunter; with research showing that the bucks are most preferred over the does. This is most especially among the trophy hunters since females do not go antlers; at least the majority.

Does are usually hunted first in most regions since they provide more meat and are more vulnerable than their opposite sex. At 3-4 years a doe is fully matured and almost reaching its peak. A deer will most likely stand out from its peers, giving a perfect target to the hunter.

On the other hand, Bucks are energetic animals that love roaming, especially during the mating season. Most of them only live up to their third year; the superior genes bucks are lucky and might survive up to ten years. A fully grown deer stands out from its species by having a muscular body and a fantastic antler. The beautiful antler is what makes it a trophy target to most hunters; predators are only interested in meat.

Predator and Prey Relationship

It is natural that it has to feed, and eventually will be fed on by other creatures; this is the cycle of life