It's a teeny bit obvious, seeing as I'm using a cat as an online alias. But I'm more of a cat person myself.
I don't like dogs. A former friend had one that didn't like me for no reason, and would bark and growl at me unprovoked. In fact, most dogs don't like me. What takes the piss is that we look after my aunt's and uncle's rescue dog occasionally. She's lovely, but I'm still scared of her.