Animal Body Structures

This animal body parts and their functions worksheet opens class with a quick Science Spotlight on how animals survive. Students read four short scenarios — a hawk, a porcupine, a dog, and a rabbit — name the body structure at work, and decide whether it is external (outside) or internal (inside the body).

Every structure is tied to a survival job: claws grab prey, quills defend against predators, lungs take in oxygen, and the heart pumps blood. That focus makes it a true structures for survival activity — students underline the exact phrase that shows how each part helps the animal live, building close-reading skills alongside the science.

The internal-versus-external sort is anchored in the text: location clues like “on the outside of its feet” and “deep inside its chest” drive the answer, so students reason from evidence instead of guessing. A four-term word bank supplies the fill-in answers with the function of each part, and a clean answer key shows the structure, the correct sort, and the clue in red.

This animal structures worksheet is built for 4th grade (grades 3–5) and aligned to NGSS 4-LS1-1 (internal and external structures that support survival), with a CCSS literacy tie-in. Just print and teach as a warm-up or review.