Answer:
Homeostasis, in a definitive way, is the maintaining of an animals internal and external enviorments in order to maintain proper and normal functioning.
Homeostasis is important to animals because it keeps their body in a steady state where they can continue to thrive and live.
When an animal can't maintain Homeostasis, it's bodily functions will begin to fail due to it's inability to maintain it's normal functioning in the present enviorment. Without Homeostasis, the body will become unstable and weak, leading shortly to death..