Most zoos nowadays are important research centers.
Besides that, they have an important educational component that surely contributes politically for conservation efforts.
Besides that, they have an important educational component that surely contributes politically for conservation efforts.
And maybe stop going to them (you went to a few?) and they will become even less common.
Never seen one of those, but there's plenty of private animal habitats I've seen that take injured and stray animals.
Usually just ran/funded by someone who loves animals.