Let me share with you a comparison between Endotherm and Ectotherm.
| Aspect | Endotherm | Ectotherm |
| Cold/Warm blooded | Warm-Blooded | Cold-Blooded |
| Metabolism | High and constant | Low and variable |
| Body Temperature | Relatively constant | Fluctuates with the environment |
| Source of Heat | Internal (metabolic heat) | External (environmental heat) |
| Energy Efficiency | Higher energy expenditure | Lower energy expenditure |
| Activity Levels | Active in a wide range of temperatures | Activity levels depend on environmental temperature |
| Adaptation to Climate | Can inhabit a wide range of environments | Limited to specific temperature ranges |
| Reproduction | Can reproduce year-round | Reproduction often tied to temperature and seasonal changes |
| Examples | · Birds · Mammals | · Reptiles · Amphibians · Most invertebrates |