Ok ive come on here to see if i can get some opinions or help.So i got this rescued African clawed frog, but the thing is that his two front legs are completely useless. He cant properly swim or eat. His legs are just limp and dragging under him, they also have this weird black thing on the underside of them. I dont know if that has anything to do with his problem.i dont want to touch them without knowing what it is. Ive since had to put him in about 3 inch deep water so that he can reach the surface to breath. if theres anything i can do to help him i want to try. anything is fine. Thank you.