Hedgehog spines are short, sharp spikes. The spines do not easily come out.
Porcupines spines are long, sharp spikes. They are called quills. The quills can easily drop out.
When a hedgehog is attacked, it rolls into a ball.
When a porcupine is attacked, it spreads its spines to form a shield.
Hedgehogs and porcupines are not related to each other.
Porcupines are rodents, like rats, mice, and squirrels.
Photographer: Martina Nicolls
Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM