This document outlines the key differences between vertebrates and invertebrates. It lists mammals, birds, fish, reptiles, and amphibians as examples of vertebrates, while arthropods, molluscs, spiders, butterflies, crabs, worms, snails, octopuses, and clams are provided as examples of invertebrates.

1. UNIT 3-NATURAL SCIENCE OUTLINE
VERTEBRATES vs. INVERTEBRATES
UNIT OUTLINE
VERTEBRATES vs. INVERTEBRATES
Mammals (horse, whale, cat, bear…) Arthropods(spiders,butterfly, crabs, worms…)
Birds (hen, eagle, pellican…) Molluscs (snail, octopus, clams…)
Fish (salmon, trout, sharks…) .
Reptiles (snake, turtle, crocodile…) .
Amphibians (frog, salamander,...) .