Animals
저자: Megan Strable
1. Reptiles
1.1. Coldblooded
1.2. Vertabrates
1.3. Produce eggs
2. Mammals
2.1. Warm Blooded
2.2. Have hair or fur
2.3. Produce live young
3. Amphibians
3.1. Ectothermic
3.2. Begin Life in water
3.3. Cold Blooded
4. Invertabrates
4.1. Have no skeleton
4.2. Do not have lungs
4.2.1. Breath through their skin