Well here's the late, great Jerry Andrus' impossible crate illusion in 3D, in which Jerry is standing inside the impossible crate.

Ian Dunbar on dog friendly dog training

A dog does not eat a dog.

Here's your dog.

Sami's dog died.

Sami's dog stinks.

Sami's dog barked.

Sami's dog barked.

I saw a dog. The dog held a piece of meat in its mouth.

The dog was dead.

The dog is dying.

Don't feed the dog.

I like the dog.

This is a dog.

This is Mary's dog.

Kate keeps a dog.

Kate keeps a dog.

That dog is big.

Ken's dog is white.

A dog is barking.

He has a dog.

What a big dog!

I saw a dog.

This dog is white.

Your dog is here.

Your dog is here.

Where is your dog?

The dog is white.

My dog eats grapes.

My dog is fast.

This dog runs fast.

Tom's dog attacked Mary.

Fadil kidnapped Dania's dog.

Fadil shot Dania's dog.

Fadil walked the dog.

Fadil walked the dog.

Fadil walked the dog.

Fadil walked the dog.

Fadil walked the dog.

Layla shot the dog.

Layla killed her dog.

Sami's dog got nasty.

Tom wants a dog.

Sami's dog bit Layla.

Sami owns a dog.