We rescued Gendo from the pound. At the time, he was all skin and bones and he had difficulty breathing. The vet put him on prednisone which helps him to breathe without coughing, but he's gained a lot of weight as a side-effect. He's a very happy cat who likes to run and play and lay out in the sun. He's the only cat I've ever seen who can be let outside in the back yard and he stays right there.