Rodent on every continent except Antarctica. They are the only terrestrial placental mammals to have colonized Australia and New Guinea without human intervention. Humans have also allowed the animals to spread to many remote oceanic islands (e.g., the Polynesian rat). Rodents have adapted to almost every terrestrial habitat, from cold tundra (where they can live under snow) to hot deserts. Some species such as tree squirrels and New World porcupines are arboreal, while some, such as gophers, tuco-tucos, and mole rats, live almost completely underground, where they build complex burrow systems. Others dwell on the surface of the ground, but may
Monte Cristo arboreal alligator lizard disappearing. Some scientists estimate that the cloud forests will disappear in the near future. These cloud forests are a major place of biodiversity. "A. montecristoi" is just one of a vast number of species that call these forests home. Conservation efforts are currently being made by the Tropical Montane Cloud Forest Initiative which is made up of three conservations program consisting of the United Nations Environment Program, the World Conservation Union, and the World Wide Fund for Nature. Monte Cristo arboreal alligator lizard The Monte Cristo arboreal alligator lizard ("Abronia montecristoi" ) is an endangered species of lizard. This species