The Blue Fluffy is an EPIC pet that is obtainable from the Planet Egg, with a 0.33% chance of hatching. Apart from the Blue Fluffy, there is also the Red Fluffy.
The latest Pet Simulator X value list for Blue Fluffy can be found below:
💎 18,000 (18k)
💎 53,000 (53k)
💎 162,000 (162k)
💎 508,000 (508k)