There will be nothing wrong with cats eating oranges. Cats may suffer from diarrhea if they eat too many oranges. Cats don’t like the smell of oranges and generally won’t take the initiative to eat oranges. Oranges are acidic fruits. If you give them to cats, they will irritate their gastrointestinal tract and cause vomiting, diarrhea, etc., so you cannot give them to them. Most cats hate the smell of acidic fruits like tangerines and oranges and will hide away when they smell them.