Bears at a zoo

Bears

Bears at a zoo

An illustration of a small birdcage.

Birdcage

An illustration of a small birdcage.

An illustration of a canary in a birdcage.

Canary in Cage

An illustration of a canary in a birdcage.

A cartoon of a cat sitting in a bird cage, with a sign attached that says "bird-seed and water for ten days." A young girl stands underneath the cage.

Cartoon of Cat Sitting in Bird Cage

A cartoon of a cat sitting in a bird cage, with a sign attached that says "bird-seed and water for ten…

A cartoon of a woman walking with her nose up in the air, while she carries a bird in a cage. She is walking past a ticket booth, where a man is sticking his head out of the window and smiling.

Cartoon of Woman with a Caged Bird

A cartoon of a woman walking with her nose up in the air, while she carries a bird in a cage. She is…

An illustration of a man looking at monkeys in a cage.

Man Looking at Monkeys

An illustration of a man looking at monkeys in a cage.

An illustration of a mother holding a child to look at a bird in a cage.

Mother Holding Child to Look at Bird in Cage

An illustration of a mother holding a child to look at a bird in a cage.

"The <em>ribs</em> are long, flat, and curved bones which bend round the chest somewhat like the hoops of a barrel. There are twenty-four ribs, twelve on each side." &mdash; Blaisedell, 1904

Thorax

"The ribs are long, flat, and curved bones which bend round the chest somewhat like the hoops…