The gypsy moth (caterpillar) is a serious defoliator of trees and shrubs in North America.
Critically endangered...alien invaders?!? We are not talking about critters across the world or aliens from Mars...we are talking about the plants, animals, and insects found in natural areas near you!


Spiny water fleas eat zooplankton and compete directly with small fish that also need to eat it.

When spongy moths have an "outbreak," the caterpillars defoliate trees (eat all the leaves).

You'll probably never see a lynx in the wild. They are uncommon in Wisconsin and pretty secretive.

The name for this lizard is appropriate. When it's caught sometimes its tail breaks into many pieces like glass.

2006 marked the first year that whooping cranes hatched in the wild in the Midwest in over 100 years!