The silhouette of a sitting cat.

Cat Silhouette

The silhouette of a sitting cat.

The silhouette illustration of the retired cat in "How Cats Came to Purr."

Retired Cat

The silhouette illustration of the retired cat in "How Cats Came to Purr."

The silhouette illustration of the shocked cat after swallowing the coffee mill in the story, "How Cats Came to Purr."

Shocked Cat

The silhouette illustration of the shocked cat after swallowing the coffee mill in the story, "How Cats…

The silhouette illustration of the sick cat after swallowing the coffee mill in the story, "How Cats Came to Purr."

Sick Cat

The silhouette illustration of the sick cat after swallowing the coffee mill in the story, "How Cats…

The silhouette illustration of the cat in "How Cats Came to Purr."

Sitting Cat

The silhouette illustration of the cat in "How Cats Came to Purr."

The silhouette illustration of the cat walking in "How Cats Came to Purr."

Walking Cat

The silhouette illustration of the cat walking in "How Cats Came to Purr."

The silhouette illustration of the genie scaring the man and the cat in "How Cats Came to Purr."

Genie

The silhouette illustration of the genie scaring the man and the cat in "How Cats Came to Purr."

The silhouette illustration of the man petting the cat walking in "How Cats Came to Purr."

Man Petting Cat

The silhouette illustration of the man petting the cat walking in "How Cats Came to Purr."