Namibia has 26 parks and reserves making it's abundant wildlife one of its greatest tourist assets. The most famous of these parks is the Etosha National Park which harbours 114 mammal species. There are 8 mammal species endemic to Namibia, including the Black faced Impala, several mice, gerbils and bats. The Black faced Impala is similar to the common Impala except for the distinctive black stripe down its face. The Namibian desert is well known for its large number of endemic dune dwellers, especially lizards, of which there are 30 endemic species. Namibia is also home to many bird species.