Cave slime

Cave Slimes are not to be confused with another NPC such as Jelly.

Cave Slimes are weak NPCs that are commonly defeated due to Slayer tasks. Lower-levelled players are also found to be training on Cave Slimes occasionaly. They are found in the low level Slayer Dungeon.

Location
Cave slimes are located in the low level portion of the Slayer Dungeon. To get there, a player can choose "Dungeon Teleport" from their spellbook, click "More", "Slayer Dungeon", and select "Low level dung".

After teleporting to the dungeon, you can find Cave Slimes north of the player. Walk west, proceed north, and then walk east to find them.

They drop low level clue scrolls.