Introduced by man for pest control in Puerto Rico, Haiti, Hawaii, and Australia. They prefer open, damp, leaf-littered fields where insect food is plentiful. The giant toad is one of the largest species of toad, reaching a length of 9 inches. The female is usually larger than the male. They have a short, squat body and short legs.
Toads usually crawl or progress in short hopping movements.
Their skin is dry and covered with tubercles or warts. These warts are collections of poison glands. When a toad is attacked, its defense is exuding a milky fluid from these warts which act as an irritant to the mucous membranes of the attacker. The poison does not protect the toad against all predators, for most snakes and birds seem to be unaffected. There are 2 concentrations of the poisonous glands behind each eye.