Gray treefrogs freeze in the winter. Their breathing and heartbeats stop, and their metabolic activity slows. In the spring, they thaw out and return to normal activities.Gray treefrogs can change color to blend in with their surroundings. On cement, you may notice they look gray. On a leaf, the same frog will be bright green.

Bullfrogs are eager eaters. They eat almost any animals they can fit in their mouths. The wide range of animals they eat allows them to live in many different areas.

American toads secrete a milky toxin from glands that look like warts on their skin. This toxin protects them from predators. Like all amphibians, American toads are highly sensitive to pollutants in the air and water. They share neighborhood habitats with people, but this also puts them at risk when toxins are added to the […]

Mudpuppies are an important part of the Detroit River ecosystem. The Detroit Zoological Society has been collecting data on mudpuppies and water quality in the Detroit River since 2004.

Known as a “mole salamander,” tiger salamanders spend most of their lives underground in burrows they dig. These burrows can be more than two feet deep.