The Pet Slime is one of the console-exclusive pets, summoned using the Petri Dish. It is similar to a Blue Slime and follows the player until the buff is removed or the player dies. The Petri Dish is found mostly in Golden Chests in the Underground Jungle. It can also be found in Dungeon chests. Unlike other slimes, this one does not jump (though it will still fly and move through walls if it becomes stuck). While travelling at high speeds, the slime will appear to fly and emit white particles from it's back.
Players have also found this pet to move through 1 wide blocks from some angles, although it is a rare occurrence.