If animals were capable of regeneration like a planarian, how do you think it would affect the ecosystem?

If animals can regenorate, then it would make a big different to the eco sysytem. The animals can survive alot long. If a zebra gets his/her leg off then it can grow back slowly then die. It will help save the animals from extinction. But at the same time it would less their resource and live in some kind of hard work trying to get food, water, ect.