The Ferret: A Traditional Pet in London

I'd like to have a pet, but my flat's very small and I live in central London. And the only pet I quite like the idea of is a ferret. What's a ferret? It's... I don't actually know. Is it a mammal or is it something else? It's an erodent. No, it's ... Quadra-ped mammal. So unfortunately, I'm not going to get a ferrets. They're kind of very long. I mean, they look like a polecat, like a little wild mink or something. Yeah, long, low to the ground. I think they eat all sorts of things. But you see