Line Symmetry and Mammals

What is a Mammal?

Mammals are warm-blooded vertebrate animals. They have a coat of hair or fur to protect them from the cold. Mammals give birth to live young and feed their babies with milk made by the mother.

Zebras, tigers, cows, elephants, dogs, humans and many, many more are all mammals.

Why Symmetry?

Like most other animals mentioned on this site, mammals have symmetry to help them survive. Symmetry helps them move well to catch prey, defend themselves and run away if need be.

Three More Reasons Animals Have Symmetry

Symmetry of the Eyes – for animals with forward facing eyes field of vision overlaps and this gives the brain enough information to create stereoscopic vision e.g. humans, Animals with eyes on the side of their heads e.g. cows for some animals and a very large field of view for others. – perceive depth i.e. they see in 3 dimensions. Eyes that are on the side of the head mean the animal has a much wider field of view – explain this – maybe a diagram – find food or water

Symmetry of the Ears – direction sound is coming from which is an advantage for looking for prey and for knowing the direction a predator is coming from.

Symmetry for Redundancy – one gets cut off or damaged still have another so the animal can function.

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