Wood Frog - Lithobates sylvatica

Diet

The wood frog eats beetles, spiders, snails, worms, millipedes, slugs, and other small invertebrates. The wood frog tadpole eats algae and plant matter.

Life Cycle

Wood frogs are one of the first species of frog to begin mating in the early spring; they may even begin breeding in early March before all of the ice has melted on their breeding ponds! Male wood frogs call out from the water to females with a quacking sound and then go out in search of a mate. Males can not identify females by sight or smell; they have to hug another wood frog and feel if it is the right size to be a female. Females are fatter than males because they carry eggs.

The female lays an egg mass of as many as 1,000 eggs in the breeding pond or pool. The egg mass is usually attached to a plant stem or stick. In about a week, the egg mass floats to the surface of the water and the gooey gel that surrounds the egg mass turns green, which helps camouflage the eggs. The green color comes from algae. The egg masses from many females float on the top of the water and look like pond scum. The tadpoles change into frogs in about two months and mate when they are two years old.

Behavior

In the winter, wood frogs hibernate under logs, stumps, or leaf litter. Their bodies freeze in the winter, and their heart and breathing stop. As much as 65% of the water in the wood frog's body turns to ice. When spring comes around, the wood frog thaws out and hops over to a breeding pond.