Invertabrates

Invertebrates are pretty small, so they to protection. Many invertebrates, mostly insects, have an exosceloton on the outside of their body to protect them from falls and from pretotors who try to eat them.

Many invertebrates have bilaterial symmetry. This means their body is the exact same on both sides (left and right). For example, a butterfly is the exact same on both sides. This helps the animal with movement.