Oh man, I talk to my animals all the time. I use my "baby voice" but it's not all high pitch and squeeky. When I talk to babies I usually talk softer and a tad higher, but not the typical 'baby talk' stuff. So, I use that same tone with my animals.

Well, the cats are a bit of a different story... I guess I use the softer tones with the snakes and mice to help calm them, and just to talk to them ^_^ The cats though... they get talked to like I would talk to a peer, or perhaps my younger brother... depends on if they are in trouble or not

I tend to ask the snakes where they are going, or why they had to soil their tub as soon as I changed it, or ask what they are looking at. The mice it's usually along the lines of 'don't you bite me you little demon' or 'look how good your being... see it's ok' when I'm holding them and they keep their teeth in their head