Sambar deer (Rusa unicolor) is possibly the 3rd largest cervid species on the planet after moose and elk. Male posses very long and strong antlers meant to show off their capabilities. Functions of antlers are defined by a biological phenomenon known as sexual selection. Antler is useful in fighting battles with other males, however it is much more important to impress the female with their strength.
Sambar deer is presently put under the vulnerable category of IUCN Red List. Unfortunately it signifies the decline in the population of the species. It is poached mainly for its skin and antlers. Below are the few pictures of the same.