Bison horns

I chose bison horns because they are permanent and they grow in yearly rings which indicate their age.

Asian elephant ears

I chose elephant ears because they can hear other elephants from miles away by feeling for vibrations.

eastern tiger swallowtail butterfly proboscis

I chose eastern tiger swallowtail butterfly proboscis because it is flexible

Spider crab claws                                                                         

I chose spider crab claws because they can grow incredibly long and strong

pintail duck legs

I chose pintail duck legs because they help you move gracefully on the water and plus they help you dive and swim deep underwater to find food.