Big green creatures

 are enemies from Fat Cat. They are the bigger version of its forerunner, the small green creatures. These enemies generally remain in one place and attack by firing bullets, bees and even small green creatures, depending on the level played.

Oddly, the amount of health the Big Green Creatures have varies from level to level. Although all these enemies' health is represented by a health bar, some of them on different levels will take more hits by the owl to destroy than others on another stage. Usually, they seem to take more hits to destroy when there is another choice of weapon the owl can use, such as movable blocks or the M Button.