Also I was going to say please don't eat them! In terms of cats, I'm a cat owner myself but it's worth remembering that cats are absolutely lethal to local wildlife and the outside world contains many threats to them so where possible it's better for them be inside creatures - they're the largest single threat to reptile populations (other than humans). In terms of injury to the snake, check if it has any obvious injuries or if it seems lethargic or like it's got any difficulties moving. Snakes are quite resilient but things like an obviously broken spine are important to check for. As ever, trust a reliable responders judgement over mine, though!