skyblock animals

back with another needle felting project! this time its the jellyfish

I needle felted the crab from the skyblock summer festival! pic 1 pic 2

Not sure if this is only Skyblock or the whole site: Whenever I get 3 adult animals in a pen they stack to a single mob w a label abobe (3x cow/pig/etc). Is there any way to stop the stacking or unstack them?