Antlion
Antlions burrow in the ground, forming a pit for prey to fall into. The pit is angled so that the sides of the pit crumble when the victim tries to climb out. After being swallowed by the antlion, the victim is kept alive and slowly digested over 1,000 years, where they will fund a new definition of pain and suffering. The prey is restrained by tentacles in the stomach to prevent it from escaping.