Fluff pets follow players around but do not have any use besides looking nice. They follow the caster around until the owner dies, at which point they disappear until summoned again. Fluff pet summoning spells are typically obtained from your class trainer (if you are a class that receives a fluff pet). Some quest rewards provide fluff pets as well and can be summoned without overriding your Deity pet. In general, you can have a maximum of two fluff pets or a Deity pet and one fluff pet active at any time.