Mother Slime

The largest of slimes, the Mother Slime starts spawning when you reach the Cavern Layer. Moves just like other slimes. Takes up 2x3 blocks of space (as opposed to the player: 3x2). Spawns 2-3 Baby Slimes when killed. To avoid this, kill the mother slime with a gun.

Like all other slimes, drops coins and sometimes Gel when killed. Mother slimes are also found in mushroom fields in large groups, along with other black slimes and occasionally some other mobs.