There is a channel owned by someone who runs a sanctuary and hospital for feral cats. This video is amazing, it shows a cat being a midwife to another cat. Most of us think of cats as solitary animals, but when stray or feral cats live together in large colonies I suppose it's not surprising if they develop co-operative behaviour:
I've never seen anything like that before. If there'd been no chicken to eat, do you think the alligator would've eaten the cat? 
Jane S 