| A | B |
| Anadromous | A lifecycle in which creatures are hatched in fresh water, migrate to salt water as adults, and then go back to fresh water in order to reproduce |
| Appendicular skeleton | The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it |
| Bile | A mixture of salts and phospholipids that aids in the breakdown of fat |
| Bone marrow | A soft tissue inside the bone that produces blood cells |
| Cerebellum | The lobe that controls involuntary actions and refines muscle movement |
| Cerebrum | The lobes of the brain that integrate sensory information and coordinate the creature's response to that information |
| Ectothermic | Lacking an internal mechanism for regulating body heat |
| Hibernation | A state of extremely low metabolism |