Tag team (which is rare as they usually fight each other) fighting a fox, which sensibly retreated. Idiots, the pair of them, the fox is a lot bigger.
It seems the centrepoint of this clash was a big, I presume hen's, egg. I gave it back to the fox, who actually did come and take it from my hand. I presume the cats didn't want the egg, the fox just happened to have it, but who knows.