Are you sure the mother isn't around? Mama rabbits nurse their babies at night, so if the bunny looks well-fed, it may not need your help. If it is abandoned, you might want to call a reliable wildlife rehabilitation center. If you decide to care for it yourself, keep the bunny in an enclosure where the temperature is about 80 degrees Fahrenheit. If the bunny isn't weaned, you'll have to check with a vet as to what formula to feed, keeping in mind that rabbit's milk is much richer than cow's milk. If the bunny is old enough, feed it mainly hay, let it nibble on grass that's pesticide and herbicide free. Carrots and lettuce can be given as treats. It's very difficult to make a pet of a wild bunny but you can leave hay,kibble and water outdoors for it. Just be careful that no predators (such as dogs and cats) can get into your yard.
