Some animals change from one form to another during their life cycle. For example, a caterpillar turns into a butterfly.
Each type of animal has its own life cycle.
An animal is alive even during stages at which it appears to be inactive, such as during hibernation or in a chrysalis.
Some animals, once they are born, have the same form for the remainder of the life cycle. Examples of this are chickens, cats, dogs and humans.
Animals include slugs, snails, worms, star fish, mussels, spiders, crabs, insects, fish, amphibians, reptiles, birds and mammals. Humans are animals.
Small animals perform a vast number of important functions in our ecosystem, such as pollination, and aerating and fertilising soil.
Small animals have a variety of external features that help them survive.
Small animals live in different places where their needs are met.
Many animals have skeletons.
Some skeletons are made up of bones.
The shape of a bone can be used to identify its likely position in the skeleton.
It is possible to gain information about how an animal may have moved by looking at the skeleton.
It is possible to gain information about the size and shape of an animal by looking at the skeleton.
The skeletons of a particular type of animal are very similar to each other.
It is possible to gain information about what the animal may have eaten by looking at the teeth in the skeleton.
By comparing the skeletons of other animals to the human skeleton it is possible to gain information about how the animals may have differed from, and been similar to, humans.
Birds have different ways of moving compared to other animals.
Birds eat a variety of foods.
The shape of a bird's beak is related to how it eats.
Each sort of bird has a distinct flight pattern.
Plant seeds are food for many birds.
Nectar from plant flowers is food for many birds.
Small animals are food for many birds.
The shape of a bird's feet is related to the way the bird lives; for example, webbed feet are found on water birds.
Most birds are active only in the daytime.
The times at which the majority of birds are most active are the hours after sunrise and the hours before sunset.