This document summarizes different types of animals. It describes how animals can be classified as herbivores, carnivores, or omnivores based on what they eat. It also distinguishes between vertebrates and invertebrates, noting that vertebrates have backbones while invertebrates do not. The five groups of vertebrates - mammals, birds, reptiles, amphibians, and fish - are also outlined based on characteristics like how their young develop, whether they have fur/feathers/scales, and how many legs they have.

1. Natural Science Unit 2
HERBIVORES eat plants.
CARNIVORES eat other
animals.
OMNIVORES eat plants
and other animals.
Depending on what they eat animals could be:
herbivores, carnivores or omnivores.
Vertebrates Invertebrates
Vertebrates are animals with
a backbone. They have got an
internal skeleton made up of
bones.
Invertebrates are animals
without backbone. They
haven’t got an internal
skeleton.
Crabs have got
one shell.
Clams have got
two hard shells.
Octopuses have
got bare skin.
Insects are the largest
group of invertebrates.
All insects have got a
head, six legs and two
antennae.

2. Natural Science Unit 2
There are five groups of vertebrates: mammals, birds, reptiles,
amphibians and fish.
Mammals drink
their mother’s milk.
Mammals are
viviparous. They are
born from their
mother’s womb.
Most mammals
have got fur and
four legs
Birds are oviparous. They are
born from an egg.
Birds have got two legs.
Birds have got feathers.
Birds have got two wings
but some birds cannot fly.

3. Natural Science Unit 2
Reptiles are oviparous.
Some reptiles have got a
shell.
Reptiles have got scales.
Most reptiles have got four
legs but snakes haven’t got
legs, they slither.
Amphibians are oviparous.
Amphibians lay eggs in wa-
ter.
Amphibians have four legs
and some, such as salaman-
ders, have got a tail.
Amphibians have got bare
skin.

4. Natural Science Unit 2
Fish are oviparous. Fish have got scales.
Their tail and fins help them swim.