Brown
Harvard
Columbia
Yale
Cornell
100

to break out of an egg

Hatch

100

the hard thing in a  mouth that is used to tear or chew food

Tooth 

100

one of the two bones that your teeth  are in 

Jaw 

100

the hard , the outer part of some animals bodies e.g. crab, turtle

Shell

100

tough and hard, like leather

leathery

200

to frighten , to make afraid

Scare

200

a sound some animals make that sounds like 'hiss'

Hissing

200

to push liquid out your mouth.

Spit

200

a snake with a flat hooded neck that can spit poison.

Cobra

200

someone who is against you.

Energy

300

a reptile with a long tail, four legs, and rough skin.

Lizard

300

an animal that is hunted and eaten by another animal.

Prey

300

a poisonous liquid.

Venom

300

to make something narrower or tighter.

Constrict

300

to take something in your mouth and down your throat.

Swallow

400

to eat or drink something and to experience it's flavor.

Taste

400

not in danger.

Safe

400

the muscle in a mouth that helps with eating and making sounds.

Tongue

400

important , very unusual, or very good.

Special

400

to look for something, usually an animal (often to kill it).

Hunt

500

to get rid of something.

Lose
500

The soft, outer layer of many animals, often covered in hair.

Skin

500

to increase  in size , change physically over a period of time

Grow

500

something not used before, not old.

New

500

a short repeated sound, made when something shakes.

Rattle