Male horse less than four years of age.
One pair of bony, deciduous, and branched hornlike structure found on the head of a deer, moose, elk, etc.
A premature form of animal or insect awaiting transformation to reach adulthood.
A sensory apparatus found on the heads of insects and most arthropods. It usually occurs in pairs.
A single point tooth that is shaped and used for piercing and holding on to food. It is located near the front of the jaw, and is prominently seen in carnivores.
A minute protozoan, occurring as a single cell with a nucleus, that changes shape by extruding its cytoplasm, leading to the formation of pseudopodia, by means of which it absorbs food and moves.
Any tailed amphibian, that has soft and scale-less skin with a long body, tail, and short limbs.
A term used to refer to an animal that has been domesticated, but has escaped and returned to being wild, while still living in its current environment. Cats, Goats, and pigs are examples of such animals.
The annual movement pattern of animals and birds between their breeding grounds and hibernating sites.
An environment that has molecular oxygen, and processes that happen only in the presence of oxygen (aerobic respiration). Organisms that require molecular oxygen to survive (aerobic organisms).
Microscopic organisms like algae and protozoa that drift on the oceans’ currents.
Another word for beak. The projecting mouth of a bird.
A process where birds and animals shed their hair, plumage, feathers, skin, horns, etc. to facilitate the growth of new ones.
A reptile belonging to the Testudines species, which include both terrestrial and aquatic animals. The trunk of these species is enclosed in a shell.
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