What are the signs my cat might show and when, if the cooked pheasant it ate was bad?

If the pheasant was spoiled, the main signs would be gastrointestinal, like vomiting and diarrhea, typically appearing within a few hours of eating. Other concerns include lethargy or loss of appetite. These signs can last from 12 to 48 hours depending on the severity. Lean, freshly cooked pheasant is safe, but always check wild birds for hidden shot pellets. If your cat shows persistent vomiting or diarrhea, contact your vet.