| amphibian |
a small animal that spends part of its life cycle in water and part of its life cycle on land. Amphibians hatch in water and breathe with gills. Then they develop lungs so the adults can breathe air. Amphibians are cold-blooded animals with skeletons inside their bodies. Frogs, toads, and salamanders are amphibians. [1/2 definitions] |
| anaconda |
a very large snake found in South America. Anacondas are not poisonous but kill other animals by squeezing them until they cannot breathe. Anacondas can grow to over twenty feet long. |
| asthma |
a disease of the lungs that makes it difficult to breathe. Asthma is often caused by an allergy. |
| blowhole |
a nostril in the top of the head of a whale, dolphin, or porpoise. The blowhole is used to breathe. [2/3 definitions] |
| boa constrictor |
a large snake that lives in the tropical areas of Central and South America. Boa constrictors are pale brown with darker marks and are not poisonous. They kill their prey by winding around it and squeezing it until it cannot breathe. |
| constrictor |
a snake that kills its prey by winding around it and squeezing it until it can not breathe. Pythons, boa constrictors, and anacondas are constrictors. |
| dolphin |
a mammal that lives in the water. Dolphins look like large fish but they breathe air. They have teeth and a snout that looks like a beak. Most kinds of dolphins live in the ocean. A few kinds live in large rivers in Asia and South America. Dolphins are closely related to porpoises and other toothed whales. |
| dragon |
an imaginary monster that looks like a giant lizard with wings, claws, and a long tail. In stories or pictures, dragons breathe fire and often guard a place or treasure. |
| draw |
to breathe in; inhale. [1/8 definitions] |
| exhale |
to breathe out; give out breath or vapor. |
| gargle |
to tip the head back and breathe out through a liquid held at the back of the throat. [1/2 definitions] |
| gasp |
to breathe in gasps; struggle for breath; pant. [1/3 definitions] |
| hiccup |
a sudden uncontrolled taking in of breath that is also stopped very quickly. A squeaking sound is often produced along with it. A hiccup is caused when the muscles used to breathe tighten up. [1/3 definitions] |
| huff |
to breathe hard; to blow or puff. [1/2 definitions] |
| inhale |
to breathe in; take in by breathing. |
| nose |
the part of the face on people and certain animals through which they breathe and smell. [1/6 definitions] |
| pant |
to breathe in quick, short breaths; gasp. [1/3 definitions] |
| porpoise |
a mammal that lives in the ocean. Porpoises look like large fish, but they breathe air. Some kinds of porpoises have a triangular fin on their back. Porpoises are closely related to dolphins and other whales with teeth. Porpoises have a round head with a blunt snout. [1/2 definitions] |
| puff |
to breathe fast and hard; pant. [1/8 definitions] |
| python |
a snake that is not poisonous and lives in Africa, Asia, and Australia. Pythons kill by winding around their prey and squeezing it until it can not breathe. |
| reptile |
a cold-blooded animal with a skeleton inside its body and dry scales or hard plates on its skin. Most reptiles lay eggs with soft, leathery shells. Some kinds of reptiles live in water, but use their noses to breathe air into their lungs. Lizards, turtles, snakes, and crocodiles are kinds of reptiles. Most reptiles have short legs, but snakes creep on the ground without legs. |