Download Ragdoll Mecanim Mixer + Bonus FREE Unity. 

Ragdoll Mecanim Mixer allows your character and animations to physically interact with the surrounding environment naturally as in the real life.

If you want a character to behave like a ragdoll, and at the same time play a beautiful animation, then this asset is for you!

WebGL Demo, Guide

PC | Mac | Android | iOS | WebGL

The character can be not only a humanoid, but also any other creature (four-legged, eight?). Asset allows you to make a ragdoll from any skeleton.