A (23) | B (24) | C (45) | D (19) | E (25) | F (18) | G (15) | H (14) | I (14) | J (2) | K (3) | L (9) | M (15) | N (11) | O (10) | P (34) | Q (3) | R (22) | S (30) | T (14) | U (3) | V (9) | W (7) | Z (2)
Habitat

Where an animal or plant normally lives and grows.

Harem

A group of females under continual control of a single male.

Headstart

A process in which young animals are raised by humans in a safe environment until they are large enough to defend themselves successfully in the wild.

Herbivore

An animal that feeds only on plants (herbs, grasses, and vegetables).

Herd

A group of animals that travels and feeds together.

Herpetology/Herpetologist

The study of reptiles and amphibians./One who studies reptiles and amphibians.

Hibernate/hibernation

To sleep or be in a dormant state during the winter season. Hibernation is caused by cold, winter conditions.

Hierarchy

The rank of an animal within its group. For example, a wolf pack has a hierarchy with the strongest and cleverest wolves being the leaders, and the younger, inexperienced wolves having to follow along.

Home range

The area over which an organism travels to obtain its food.

Horns

Growths on the head of an antelope, cow, sheep, or goat that are never shed.

Horticulture

The practice of growing and cultivating plants, especially in a garden, nursery, greenhouse, or botanical garden like the San Diego Zoo or San Diego Zoo Safari Park.

Host

In biology, a host organism is one that provides sustenance to one or more parasitic organisms.

Hotspot

An area of instability or potential danger. A conservation hotspot is a geographical location where plants and/or animals are in danger of becoming extinct.

Husbandry

The daily care of animals.