Gaia Online has several types of pets.
Things you can use to purchase pets:
Depending on the shop, many breed-able shops will provide different ways to get a pet for free.
Chat with our AI personalities
The pets are very expensive at 900 starcoins theres 4 types of pets on moviestarplanet theres pupz, furball, boonie but you have to be a VIP to get a dragon. to buy the pet go to the place PETS and you can click boonies or pets and once you've bought a pet go home and click 'EDIT MY ROOM' and there will be an egg click it and then click 'SAVE' and then click the egg it will hatch into a pet for your movie star.
First you have to go to the imvu website, then go to Catalog>Pets and pick one. I don't think you can buy pets in the 3D chat o: