There are many animal lovers in the world, which is why so many people own one or more pet in their homes, and dogs happen to be one of the most common pets that people own. Thanks to breeding, dogs come in many sizes and colors, and with a dog, you usually get a loyal companion who you can walk and play with outdoors; and they will even try to defend you if they feel that you and your family are in danger. Something that every owner needs for their dog is a collar, so that they can properly leash it when outside, and for other people to identify it if the dog ever gets lost; this goes for billionaire dog owners as well, but they sometimes buy collars that are far too extravagant and expensive. At 3.2 million dollars, the Amour, Amour Dog Collar (pictured) is the most expensive collar you will ever see, and for good reason, because the collar itself is made from crocodile leather, but what really makes it expensive is the fact that it comes with 1,600 diamonds which includes a 7-carat centrepiece, all of which are set in white gold.