You can open the Item Mall window by pressing the 'O' letter key in-game and under the Pets > NewPets tab (if its not there it hasn't been added yet)
/-= Pets =-\
Alone
Anger
Aventerous
Blush
Bomba
- Will Be Added Soon -
Budgey
Charming
Chill
Cool
Kung Fu Panda
Love
Madwolf
Naughty
Poorly
Shy
Sick
Stressed
Each Pet 100 Cubi Each
/-= Werefox Pets =-\
Banger
King Tutti
Mash
Armored Tiger
-Will add soon-