I love the colors you're using. They're so soft and cute. I took the liberty of drawing up what I would go with, and you can take it or leave it - edit it if you like. But I kept the hearts, paw print and dog graphic (he's too cute - looks like he's getting his chin rubbed) but incorporated the cat and snake a little better (in my opinion anyway). I also added the letters of your business name, but they could be left out, moved, etc.
The whole thing is very sloppy - all I had was lined notebook paper, and I only worked on it for about 5 minutes. But if you decide you'd like to use any part of I'm sure you could get someone professional to fix it up.
Good luck! I've always wanted to do a business like that. Way too young to get into it now though.
also, I love your display name. I used to have a catahoula and when I'd tell people what she was, they'd say, "Cata-whata?" -lol-