The average size of Eastern Gray Treefrogs is between 1 1/4 to 2 3/8 inches (3.18-5.22 cm). Eastern Gray Treefrogs have very warty, rough skin and rather large toe pads that are very sticky because of the slimy mucus they produce. They range in color from greenish or brownish to grey and adults have several large, dark blotches on their backs. Also, there is often a dark-edged light spot under their eyes. Eastern Gray Treefrogs also have a bright yellow or orange coloring on the inside of their thighs that they can flash at predators to confuse them when they are under atack. Male and female treefrogs look the same except that the underside of the males' chins is much darker. This is because they have sacs in their throats for calling during mating season and females do not.
Eastern Gray Treefrogs are only native to the Nearctic region. They can be found throughout the eastern United States and southern Ontario, but are not present in southern Florida or Maine. Their range extends westward to Texas, Oklahoma, Kansas, Nebraska, and North and South Dakota.
Because Eastern Gray Treefrogs need temporary pools or permanent water for breeding, they live in forested areas that are in or near permanent water. During the summer months they tend to live in moist areas in hollow trees or rotted logs. In winter they hibernate under tree roots and leaves.
Eastern Gray Treefrogs follow the same developmental pattern that is found in most frogs. Eggs are laid in shallow pools and tadpoles emerge after a few days. The tadpoles are small and somewhat fishlike in appearance. After 2 to 2.5 months they transform, or metamorphose, into young frogs. Grey Treefrogs are almost always bright green right after metamorphosis and they stay this way for some time before taking on their adult coloration.
Eastern Gray Treefrogs can live to be 7 to 9 years old.
Eastern Gray Treefrogs are nocturnal, which means they are only active during the evening and night. They live high in trees or shrubs. They are easily found during breeding season, but very rarely seen the rest of the year. They have the ability to change color from grey to green or brown depending on activities and the environment.
In the winter, Eastern Gray Treefrogs bury themselves beneath logs, leaves and dirt. About 40% of their body can freeze during the winter. They keep their blood stream from freezing by producing an antifreeze-like fluid called glycerol. The rest of their body fluids usually become frozen during hibernation.
Eastern Gray Treefrogs have a shrill, chirp-like call. It lasts for about a second and repeats on 3 or 4 second intervals. Male Eastern Gray Treefrogs call most often during mating season.
Cope's Gray Treefrogs and Eastern Gray Treefrogs have slightly different calls. This is in fact one of only two ways in which they can be told apart. Cope's Gray Treefrogs make roughly between 35-70 notes per second, while Eastern Gray Treefrogs only make about 17-35 notes per second.
Eastern Gray Treefrogs, like most frogs, eat a huge amount of insects and therefore play a big role in controlling their populations.
Tree Frogs feed on insects!
Eastern Gray Treefrogs are not currently an endangered species. However, many frog and toad species are currently on a steady decline, often due to pollution and habitat loss. The best thing to do to ensure the survival of treefrog species is to monitor their populations and to protect their habitats.
There are actually two separate species of grey treefrogs, Eastern Gray Treefrogs and Cope's Gray Treefrogs. These two species only have two differences. The only noticeable difference is in their mating calls. Eastern Gray Treefrogs have a slower trill than Cope's Gray Treefrogs. The other difference is in the number of chromosomes. Cope's Gray Treefrogs are diploid and Eastern Gray Treefrogs are tetraploid. Because of this, researchers suspect that Eastern Gray Treefrogs may have evolved from Cope's Gray Treefrogs.
living in the Nearctic biogeographic province, the northern part of the New World. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends.
an animal that mainly eats meat
animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature
union of egg and spermatozoan
forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
A large change in the shape or structure of an animal that happens as the animal grows. In insects, "incomplete metamorphosis" is when young animals are similar to adults and change gradually into the adult form, and "complete metamorphosis" is when there is a profound change between larval and adult forms. Butterflies have complete metamorphosis, grasshoppers have incomplete metamorphosis.
having the capacity to move from one place to another.
the area in which the animal is naturally found, the region in which it is endemic.
active during the night
reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.
breeding is confined to a particular season
reproduction that includes combining the genetic contribution of two individuals, a male and a female
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
Living on the ground.