Last night we were feeding Kitty and noticed that he seemed a little slower and dopey. We took him inside and looked at him. His left eye was slightly swollen and the top of his head looked like it had a big goose-egg on it. We are not sure what happened to him, but we gave him a tiny amount of aspirin and let him sleep inside in case it was a run-in with another cat. Sometimes we hear cats fighting and hissing in our neighborhood, but it could have been something else altogether.
In fact, he is so lumpy now, it could have been Bugs Bunny (how many lumps do you want?). ha! Hopefully he starts feeling better soon or we might have to take him into the vet.