inside of a dog, it's too dark to read

A person inside the stomach of a dog (he's a very good boy) is reading a book by flashlight.

A dog wags its tail at an x-ray clinic as it receives an x-ray of its stomach, illuminating a stringy white object that it must have swallowed. It is sitting beside a completely sogged-out tennis ball.

Fido sits with his head high, proud to have once again returned the fuzzy green sphere wet and glistening to its rightful home. He has faith that he can show the worm creature gestating in his belly how to live with the same purpose and determination, that he will bring another good boy into this world.