If you didn't already know this, many of Animal Jam's pets have become on sale for four hundres gems as opposed to three diamonds. This makes getting pets much easier. It also gives is a much bigger selection of pets to buy. As of now, here are the pets that have become available for gems.

Anglerfish
Arctic Wolf
Bunny
Butterfly
Cat
Dog
Duck
Frog
Hamster
Jellyfish
Polar Bear
Raccoon
Rhino
Sea Horse
Snake
Tarantula
Tiger
Turtle