Keep him in a 10 gallon tank or a good sized plastic container. Give him some sort of hide for shelter (like half a plan pot or you can just go to the pet store and look for one there) and give him a dish deep enough and big enough that he can sit in it and have a soak. Feed him crickets, earth worms, beetles, things like that. He will be fine. My toad's leg was completely flat and I just set up his tank and it healed on his own. He lost his foot but he is doing well. Just make sure he's safe, well fed and always has clean water and the toad will do most of the work. Mine did at least so I wouldn't doubt that this little guy will be okay as well. Good luck