With a fortune valued at more than $300 million, this pampered pooch is far and away the world’s richest animal. Gunther IV inherited his millions from his father, (wait for it…) Gunther III, who in turn inherited his fortune from the eccentric German countess Karlotta Libenstein. Gunther’s entourage includes servants and maids, a chauffeur, and a personal chef, and he reportedly owns a Miami villa that once belonged to Madonna.