Slime Whistle

Use the whistle to summon the pet. Using it again dismisses that pet. Three pets can follow you at once.

Right-click the whistle in your inventory to name the pet. A name holds up to 20 characters and accepts letters, spaces, apostrophes, and hyphens. Without a name the pet is called "<your character>'s pet".

The pet follows you, catches up when it falls far behind, and reappears beside you after you take a portal. It is cosmetic and takes no part in combat.