4 legs, 2 eyes, 2 ears, 1 tail

Why do cats lick their paws, whiskers, ears and tails clean every morning?

Variant #1

The cats recount them! You never know what could have happened to them at night while the cat was strolling the roofs and fences. And only when they make sure that everything is in order the cat can lift up its tail and run to the fridge, because that is a very insecure place and food vanishes there every night, that is why cats want to recount everything that is being stored there.

And only then sitting at the window cats start recounting people passing by, cars driving by and pigeons, sparrows and butterflies flying by. Now you know that it is was not the human being who invented mathematics. People just borrowed the cat habit to recount everything they see and adapted the cat invention to human needs.

Variant #2

Some scientists do not agree with the first version. They think that people borrowed much more than just the basics of mathematics.

Just try to remember: "Whiskers, paws and a tail – these are my documents," – this is an immortal saying by the great cat Matroskin – the main character of a well-known Russian fairy-tale.

This idea could have inspired the artist to create a very special poster, depicting a stamp, which enumerates not only the four paws and a tail, but also two eyes and two ears. Thus, it becomes absolutely clear that those were cats, which were the first to use biometric documents.