Widely scattered tall trees that break through the canopy of a tropical rain forest.

A body opening that serves both for excretion and for the reproductive organs in reptiles, amphibians, and birds, as well as many fish and some invertebrates.

A means by which bats and certain other animals can find their way, find food, or avoid obstacles by emitting a series of sounds, often inaudible to humans, which echo back from an object and are received by the ear.

A sleepy or dormant state caused by hot, dry, summer conditions.

A viral disease that affects the nervous system in mammals. It can lead to paralysis and death. Rabies is spread from the bite of one mammal to another.

Any root exposed to the air.

An unprovoked attack made by an animal.

The tendency for an animal to attack.

A communication made by animals to alert others to the presence of a predator or a potential predator. May be visual, vocal, olfactory, etc.

An animal or plant that has less pigment than normal. An albino animal usually has skin that appears white or transparent; white or nearly colorless hair, feathers, or scales; and pink or blue eyes with a deep-red pupil. An albino plant has less of the chemicals that give plants their normal colors.