Initially, I used the paw glyph as the first 'e' in PetDuel, but in the end it looked like PotDuel, and the paw actually looked kinda like a certain leaf at small sizes...
So, I went back to the drawing board and decided the paw would work as the negative space within the 'P' in PetDuel. I'm a big fan of apps that only use their letter (Pandora, Facebook, Path, Groupon, etc), so I wanted this to fit nicely with my other top apps.
The font we use inside the app is Dosis by Pablo Impallari, so that's what's used here in the icon.
Please download PetDuel today and let me know what you think!! Oh, and a 5-star review would be awesome :)