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
Cope's arboreal alligator lizard aurita" are primarily omnivores, but can live on either insects or plants for long periods of time. In times of optimal conditions, they will often prefer to forage for abundant insects such as crickets and grasshoppers as well as other invertebrates such as caterpillars, snails, spiders and mealworms. In addition, alligator lizards also rely on eating bromeliads, which serve as a vital source of energy when insect abundance depletes. Because of this, presence of bromeliads growing on and around their habitat is an important factor when determining their immediate habitat location. It typically takes Cope's arboreal alligator lizards until the