Their diet consists of lizards , small rodents , frogs , and bats .
They are nocturnal and secretive , spending most of their time in rock crevices , and other areas difficult for potential predators to access .
predators ' diet consists of lizards , small rodents , frogs , and bats .
They are nocturnal and secretive , spending most of their time in rock crevices , and other areas difficult for potential predators to access .