Animals can be
- oviparous: they come from eggs
- viviparous: they are born live from their mummy's body.
- carnivores: they eat meat.
- herbivores: they eat plants.
- omnivores: they eat meat and plants.
- vertebrates: they have a backbone and a skeleton in their body.
- invertebrates: they don't have a backbone. They have an exoskeleton outside.
What animal groups are vertebrates?
- MAMMALS:
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- they drink their mother's milk
- they breathe with gills (branquias)
- REPTILES:
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- they lay soft eggs in water
What animal groups are invertebrates?
- they have a segmented body 
- they have limbs with joints
- they have a thin (fino) or thick (grueso) exoskeleton
- some have a shell
- many have tentacles
- they live in water or moist places (sitios húmedos)