The red-eyed tree frog (Agalychnis callidryas) is a species of tree frogs.
Red-eyed tree frogs spend most of their time on large tropical leaves. They are not poisonous, and rely on camouflage to protect themselves. During the day, they stay still, cover their blue sides with their back legs, tuck their bright feet under their stomachs, and shut their red eyes. So they look almost completely green, and are well hidden among the leaves. The large red eyes are a defensive adaptation. When a red-eyed tree frog detects a predator, it abruptly opens its eyes and stares at the predator. The sudden appearance of the red eyes may startle the predator, giving the frog a chance to flee.
They are active at night. They like to eat small insects.
- The largest frog is the African Goliath frog (Conraua goliath). The maximum recoreded weight is 3.8 kg (8.4 lb), and a snout-to-vent length of 39 cm (15 in).
- Paedophryne amauensis is not just the smallest frog, but the smallest vertebrate, 7.7 millimetres (0.30 in) long.
Some frog species are adapted to a cold environment. The wood frog (Rana sylvatica), whose habitat extends into the Arctic Circle, buries itself in the ground during winter. Although much of its body freezes during this time, it maintains a high concentration of glucose in its vital organs, which protects them from damage.
Look at the poison frogs below. What’s different about them from the other frogs and toads you’ve seen?
- The frogs and toads you’ve seen have blended into their environments. They disappear into their surroundings. These frogs have brightly colored skin to warn that they are poisonous. It’s part of their defense to be distinct and show themselves!