Wood Frog

Wood Frog

Size: 1.5 - 3.2 in (3.8 - 8.2 cm)

Weight: 0.3 oz (8 g)

Diet: Carnivorous

Scientific Name: Lithobates sylvaticus

Geographical Range: Alaska, the North East of North America. (They are present but less common in southern and western parts of the U.S)

The Wood Frog is a woodland frog that's most distinct characteristic is the black markings around the frog's eyes. They come in a variety of colors including red, green, brown, and grey. Usually, the females are brighter than the male Wood Frogs. They have two dorsolateral folds that go down each side of the frog's body. These are the folds that start from the back of their eyes and down the body. They do not have webbing on their front feet.


They have adapted to living in cold weather and they are the only frogs that live north of the arctic circle. Once winter comes up the frogs will stop breathing and their heart will stop beating, they will freeze. The frog's body produces an anti-freeze so that water inside the frog's cells does not freeze. If the water in the cells did freeze it would be fatal to the frog. Water still does freeze in the frog's body, just the water surrounding the cells and not in the cells. About 65 percent of its water freezes. Once warmer weather comes the frog will thaw and go right back to eating and breeding.


These little frogs are carnivorous and eat insects, arachnids, worms, slugs, and snails. They get hunted by other animals including snakes, snapping turtles, raccoons, skunks, foxes, coyotes, and birds.


They live in the woods but in the spring they will go to vernal pools and lay eggs. Eventually, these eggs will become tadpoles and they will eat algae and dead plant matter, and every once in a while they will eat the eggs of other amphibians. They get hunted by beetles, salamanders, wood turtles, and other wood frogs sometimes.


Virginia Herpetological Society, https://www.virginiaherpetologicalsociety.com/amphibians/frogsandtoads/wood-frog/wood_frog.php.

“Wood Frog- Lithobates Sylvatica: Wildlife Journal Junior - Wildlife Journal Junior.” New Hampshire PBS, https://nhpbs.org/wild/woodfrog.asp.

“Wood Frog.” National Wildlife Federation, https://www.nwf.org/educational-resources/wildlife-guide/amphibians/wood-frog.