Small green creatures

 are the second enemies encountered in Fat Cat. They share similar characteristics to the Red Eyeballs, which the player would see previously in the first level. Like the red eyeballs, green creatures are destroyed almost instantly from the owl's attacks. They usually move around in levels, although sometimes they remain stationary and leave food in their place.

A bigger version of the green creature, named the Big Green Creatures, may spew out green creatures from its body. They may also be spawned out of Organic Floating Trees.