Lady-cat and dog. Only representatives of animal kingdom, that became the real friends of man. Different, as a day and night, they were our companions from time immemorial and unchanging accompanied us on a way from the primitive state to civilization.There is not in the world a beast that would subordinate right through life to the man how it was done by a dog, and there is not a beast that would manage to subordinate to itself a man how it was done by a lady-cat. An unselfish, infinitely devoted dog and sly, capricious lady-cat became the heroes of book of Конрада Лоренца, that here already decades are read out people all ages in the most different countries.