Diablo 3 Cosmetic Pets is a service that allows your Diablo 3 character to earn a random cosmetic pet from The Menagerist Goblin. They are relatively rare compared to other types, but always drop a single non-combat pet regardless of difficulty. The pet dropped is always a random one of those the player does not have as of yet, so on each kill, one is guaranteed to acquire a new pet. Your Diablo 3 character will have a Random Cosmetic Pet by the end of this service.
Random Cosmetic Pet
A delay may occur in some cases such as but not limited to: start of a new season, tight or busy schedule and public holidays.