The eggs are small, black and usually numerous, in 'strings of jelly', deposited on the bottom of ponds. Tadpoles, too, are black, small and numerous. They have shorter tails than native frogs and swim about in a group. This is a very poisonous species. These substances are concentrated in the 'warty' skin and in two large glands, one on each side of a toad's head.
Toxins are also present in a toad's muscles, bones and body organs, and in eggs and tadpoles.
However, Cane Toads pose little threat to 'life and limb' unless they are eaten or their skin secretions have contact with a person's eyes or mouth. Cane Toads are very passive animals and should always be avoided. Their toxins make Cane Toads a potential threat to some domestic animals like dogs and to some wildlife. It is well-documented that many species of native vertebrates die if they eat Cane Toads, their eggs or tadpoles. However, the full extent of the impact of the Cane Toad on native wildlife is not, and may never be fully understood.