Even co-operative hunting does sometimes occur with closely bonded cats. Littermates Bubble and Squeak were two such hunting partners. Between them, they quartered the field in front of my home, flushing out field mice for each other and often sharing the catch. 12 year old Scrapper regularly teamed up with unrelated 6 month old Aphrodite to hunt the birds that devastated my fruit bushes. This was a beneficial partnership as Scrapper, who had no teeth, flushed birds towards Aphrodite who despatched them, but didn't eat them! There was no doubt that Scrapper masterminded the operation as Aphrodite was not very bright!
Discussions with cat-owning friends have provided many more accounts of cats which flushed prey from flower borders into the waiting paws and jaws of the cats they lived with.
In 1996, studies of cats in the Galapagos Islands indicated that some cats will hunt co-operatively to increase the likelihood of successful hunts. This observation was made when prey was difficult for a single cat to catch. At the cat shelter where I work, ferals Kim, Jade and Gem (littermates) did not hunt as a group but they frequently shared their kills.