Some species spend most of their lives in trees or bushes; this is called arboreal (African "Pseudohaje" and "Dendroaspis", Australian "Hoplocephalus"). Many others are specialised burrowers (e.g. "Ogmodon", "Parapistocalamus", "Simoselaps", "Toxicocalamus", "Vermicella"). Some species have very generalised diets. Others have specialised on a certain kind of prey. They have also adapted themselves, to better be able to feed on other snakes, certain lizards, squamate eggs, mammals, birds, frogs, fish, etc. 