Looking around on the net, I found the Worth1000 photoshop site. Check out some of the photos. Check out the Mamsects and Ismals. I love Caterpillar by Penbender and zebra+worm=worbra by warior11, among others.
Take a look through the different galleries. I really enjoyed a lot of the pictures.
Animal Crossbreeds is a cool gallery where you'll find fropigs and cabbits.