Classify animals based on observable characteristics (Vertebrae or Invertebrate depending on whether they have a backbone or not)
e.g. limbs, teeth, body covering, overall shape, backbone
Amphibians:
Reptiles:
Birds:
Mammals:
Fish:
Insects:
- adults breathe through their moist skim, also have lungs
- have a three chambered heart
- go through metamorphosis
- lay soft shelled eggs in water, external fertilization
- no claws or toes
- coldblooded
Reptiles:
- heart almost completely four chambered
- have lungs
- coldblooded
- dry, leathery skin
Birds:
- Lay hard shelled eggs, eggs incubated ( sitting on them)
- have wings, although not all fly
- hollow, light weight bones
- no teeth
- beak present
- have lungs
- warmblooded vertebrae
- parental care helps young survive
- feathers
Mammals:
- Have hair or fur
- bear their young alive ( with exception of the spring-skinned anteater and platypus)
- secrete milk for their young
- specialized teeth(per-molars, molars etc.)
- have lungs
- warmblooded vertebrae
- live on land or water
Fish:
- coldblooded
- vertebrates
- are aquatic
- usually have fins
- lay soft shelled eggs ( except for sharks who have live young)
- use gills to breathe oxygen
Insects:
- no backbone ( invertebrates)
- have exo-skeleton
- segmented body
- lay eggs
- antennae on head