Little Friends

I've always wondered how our cats regard each other, whether they are friends, or just cats stuck in the same house. They most certainly like human company, but do they actually like each other?

So I figure when I found Sophie resting her head on Sasha earlier that they must have mutual friendship going, as there's no way an animal is going to be lent on otherwise.

Not that any of our cats understand the concept of "personal space", as one is sitting on my shoulder whilst I write my Blip....