Fraser Island wildlife is unique. This is due to the fact that its gene pool has been separated from the mainland for centuries and animals that exist in Fraser Island have had little or no contact with their mainland relatives. The wildlife on Fraser Island includes many different species of reptiles, hundreds of bird species and a number of mammals. The best know of these is the wild dog or Dingo. Fraser islands population of dingoes are extremely important as they are the purest of the species left in the country. On the mainland, dingoes have interbred with feral dogs to produce an animal that, in many cases, does not look at all like the original dingoes that can be seen on Fraser Island.