Given that bugs and insectoid things replace most things on Alternia that would be non-insectoid on Earth, perhaps the inverse is also true.

Like if you leave food out in the open for too long, a group of little birds will start flying around it picking it to pieces. Or you lift up a little rock and all the tiny armadillos hiding underneath curl up into balls. A crop is ruined by a swarm of bats eating all the leaves.