Enjoy the Battle Pets
Patch 5.3 adds new battle pets. You may have already seen some models earlier. It's the best time to look at them again and find out the ways to obtain them.
Robots---This pet will be craftable via the profession and the pet will be BoE,so you can buy it in the auction house.
Valkier Pet ---This pet is added to Icecrown zone in Northrend.You will be able to capture it with ease.
Baby Triceratops ----This pet was added to the Throne of Thunder loot table. You can get it as an extra roll with your coins.
Blood Slime---This pet was added to the Primordius loot table in Throne of Thunder,drops in all difficulties with a small chance being in the gold bag you get,when there's no loot for you.