Sorry about the second post, I forgot to mention how to feed him. He may not want to eat for a while, at least until he is not in as much pain. Try to feed him anyway. In order to keep him from having to hunt, try to feed him with a pair of tongs or tweezers, I feed mine by hand (I just pinch the cricket or wood roach between my fingers and hold it in front of the frog with in striking range) but don't hold the insect too closely to the frog or he may not be able to focus on it to tell that it is prey. It usually takes a few tries to get a frog to take food by hand or with tongs but don't give up; he will take it eventually once he is hungry. I also use a single chop stick or the blunt end of a skewer to push the insect closer to the injured frog so he does not have to move around to get to the insect. either method will work, just make sure the little guy does not have to work for his meal as this will keep him from healing as quickly and can even make him re-injure himself. It would be helpful to know what kind of frog you have in your care so we can better advise what to feed him, but in most cases crickets do just fine. To make sure the insect is not too large for the frog, only give him insects that are no bigger than the space between his eyes. You can pick up crickets from the local pet store and since it is summer, you can even catch them from the garden, just make sure if you catch them that there is not chance that the insect could have been exposed to pesticides or other harmful chemicals like lawn fertilizer as these will poison your frog. Please post a pic of the little guy if you get the chance. I can give you more accurate info on his care and treatment if I can see what kind of frog it is and how bad the injured leg really is. Thanks for taking the time to read the post and once more, good luck to both you and the little frog. I hope he makes a full recovery!

Best Wishes;
MsBlueRose