When you are playing in Adventure Mode, Animals use skills to fight enemies.
Animal skill availability and skill types vary from Animal to Animal, and they can be activated if certain conditions are met.

Types of Animal skills available
1. Poko Forest Blessing: Recover HP
2. Pogo Stick: Increase the number of Stones
3. Frozen Apple: The Monster is unable to attack for 1 turn
4. Bomb Pocket: Makes Arrow Bombs or Double Bombs