Worksheet: Animal Skeletons

In this worksheet, we will practice on how to identify and classify animals which have skeletons.


Some animals, like frogs, have a skeleton. How do we classify animals with skeletons?

  • AReptiles
  • BVertebrates
  • CAmphibians
  • DInvertebrates


What animal does this skeleton belong to?

  • ABuffalo
  • BElephant
  • CCow
  • DHorse

This animal has much bigger leg bones than a human’s. Why does it need bigger bones?

  • ATo help it hunt for food
  • BTo help it climb trees
  • CTo help it run faster
  • DTo help it carry more weight


What animal does this skeleton belong to?

  • AA mouse
  • BA fish
  • CA horse
  • DA bird


This a a python.

Burmese Python-72 ppi

Does a python have a skeleton?

  • AYes
  • BNo

Is a python a vertebrate or an invertebrate?

  • AInvertebrate
  • BVertebrate


This is the skeleton of a tyrannosaurus rex. Which bone is labeled A?

  • ATail
  • BJaw
  • CSpine
  • DSkull


How would a crab be classified?

Crab-72 ppi
  • AInvertebrate
  • BVertebrate


A jellyfish does not have a skeleton. How are animals with no skeleton classified?

Jellyfish-72 ppi
  • AVertebrates
  • BMammals
  • CFish
  • DInvertebrates


The image shows the skeletons of a giraffe and a human. The giraffe has long legs to allow it to reach plants to eat.

Name other bones that are longer in a giraffe than a human to allow them to reach tall plants.