Quite like #14 - Don't feel the need to have the text "online pet shop" in the logo, and ot's a bit tough to make out the detail of the dog (maybe too much detail a more simple dog and cat design might work).
Looking again. Love it, love the font, love the character / persona. Would like to see if he could be something more. Is there a cat - nemesis in the same style?
Right now I´m out of my office, yes, the character have been illustrated by my own, if you decide to purchase my design as winner youll receive all the rights of it so you can protect it againts copycats, it will be yours so you can use it in any form you wish once the contest be completed.
I can make a nemesis cat, that will be so fun, will return in a couple of hours with it.
You ask me for a simple doggie, so the way to make his/her expressions and movements have to be simple too, I make a simple expression on his/her eyes to let the people know that this 2 characters doesn´t like themselves very much :D I think in to make the cat in pink, but I think it looks better on white and make it match with the doggie.