The Cane Toad is tough and adaptable, as well as being poisonous throughout its life cycle, and has few predators in Australia.

Cane Toads (Rhinella marina) are large heavily-built amphibians with dry warty skin. They have a bony head and over their eyes are bony ridges that meet above the nose. They sit upright and move in short rapid hops. Their hind feet have leathery webbing between the toes and their front feet are unwebbed. Adult Cane Toads have large swellings – the parotoid glands – on each shoulder behind the eardrum

Cane Toads may be grey, yellowish, olive-brown or reddish-brown, and their bellies are pale with dark mottling. Average-sized adults are 10-15 cm long. The largest female measured in Queensland was 24 cm long and weighed 1.3 kg. Male Cane Toads are smaller and wartier than females.