earth: the planet third in order of distance from the sun, between Venus and Mars; the world on which we live.

Worm: a small animal with a long, narrow, soft body without arms, legs, or bones.

asteroid: an object like a very large rock that goes around the sun like a planet.

skunks: a small, black and white North American animal that makes a strong, unpleasant smell as a defence when it is attacked.

saber-toothed cats: any of various extinct carnivorous cats (such as genus Smilodon) that were widely distributed in the Oligocene through the Pleistocene of both the Old and New World, are characterized by elongation of the upper canines.

Reptile: an animal that produces eggs and uses the heat of the sun to keep its blood warm.

rabbits: a small animal with long ears and large front teeth that moves by jumping on its long back legs, or the meat of this animal eaten as food.

coyotes: a small wild animal like a dog that lives in North America.

Ocean: a very large area of sea

Paleontologist: the scientific study of organisms that lived on earth before there were written records, esp. by examining fossils.

arthropod: a type of animal with no spine, a hard outer skin, legs with bones joined together, and a body divided into different parts, for example a spider, crab, or ant.

Insect: a type of very small animal with six legs, a body divided into three parts and usually two pairs of wings, or, more generally, any similar very small animal.