Fact 1: Thirst is used to make an animal realize that it needs to replenish its bodily water by the body.

Fact 2: Chickens can sometimes be noisy animals.

Given the two facts above, answer the question "what uses thirst to realize it needs to replenish its bodily water?" with the following options: 
- salamanders
 - Lobsters
 - chickens
 - clouds
 - density
 - some mammals
 - humans
 - wind


 

   chickens      