Mustaches, legs, and a tail.

The Cat in the Sailor’s Uniform: My whiskers, my paws, and my tail—these are my “documents”.

“Paws and Tail” (Gavrilov)

And what documents do you have?

True Matroskin

“Again, the expenses were unexpected.”

I saw that guy in Khimki.

The paw’s whiskers and the tail are my documents.

Mustaches, legs, tail

“Just a bunch of nonsense.”

The Dream of Matroskin