| Term | Definition |
| plantigrades | animals that don't walk on their toes and use the entire bottom of their foot |
| hibernate | – to pass the winter in a resting state by slowing its breathing down, lowering its temperature, eating large amounts of food ahead of time and retreating to a special place to sleep for a long period of time. |
| dormancy | a state of temporary inactivity – a long, quiet nap, however with periods of awakening. |
| opposable thumbs | the thumbs can move around anbe be placed across ones fingers to help you grab things |
| romp | a group of otters |
| holt | an otters small home |
| retractable claws | the animal can pull its claws in and out of its paws |
| kits | a baby raccoon |
| prehensile | unusually long tails that an animal can use to grasp things, like a branch of a tree |
| virus | a tiny agent of infection |