Kind of off topic but anyone into pony? I think I read too much Black Beauty as a kid XD but the more I read the more intrested I become. The only problem is I can't find anyone else who is.
I'd have to say that I'd like a sub to be kitten. Perhaps it is a bit of a fetish for me, but there is something erotic about the feline nature found in women. I love to see their sexy body stretch and little licks from the tips of their tongues. I like the bit of independence that needs to tamed. I like 'em feisty.. and then they come and curl up with you and purr.
I'm not exactly in a D/s relationship, but I have played with it a bit. When my wife and I play in that way (which isn't often), I refer to her as "kitten".