2. Gail Posner's Chihuahua: The American business executive Victor Posner died in 2002 leaving behind millions for his daughter Gail. When Gail passed away she awarded $3.1 million, to her little pampered  Conchita the Chihuahua. According to the daily record the dog owns a £5million beach house, cash and jewellery. The dog also wears £10,000 Cartier necklaces and enjoys weekly spa treatments. Chihuahua also avails the service of full- time staff.

3. Patricia O'Neill's chimpanzee: Considered as the world’s richest ape, Kalu the chimpanzee inherits $62 million from his owner Patricia O'Neill. The Chimpanzee was adopted years earlier by Patricia who is the wealthy daughter of the Countess of Kenmore. It is said that her wealth was about to be collected by her husband Frank O'Neil, the ex-Olympic swimmer from Australia. But Patricia changed her will at the time of her husband’s absence and the will demonstrated that Kalu will receive $60 million-plus after her death.