Feature

Passive mob, about the size of a pig/cow.
This mob eats flowers and excretes a jelly like substance through it's fur, overall generally appearing like a cotton ball with legs.
The mob could eat up to 3 flowers with a cooldown between eating which grows the hump on it's back. After 3 flowers the mob will laydown and sleep.

If the mob has at least eaten one flower the player can punch or damage it to make it shed the jelly as an item drop, the mob does not actually take damage when damaged while at least one flower has been eaten. Item uses would be versatile. Could be automated with a flower farm and some way of damaging the mobs.