Cane Toad
Rhinella marina
Quick answer
The cane toad is a large, warty terrestrial toad native to the Americas, reaching up to 1 kg (2.2 lb). It secretes a powerful toxin from glands on its shoulders and is famous as a destructive invasive species in Australia, where it was introduced in 1935. Cane toads commonly live 10 to 15 years.
Cane Toad facts at a glance
| Scientific name | Rhinella marina |
|---|---|
| Diet | Omnivore (insects, small animals, scraps) |
| Habitat | Grassland, woodland, gardens, wetlands |
| Lifespan | 10–15 years in the wild |
| Weight | Up to 1 kg (2.2 lb) |
| Size | 10–15 cm (4–6 in), sometimes larger |
| Conservation status | Least Concern (IUCN) |
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Amphibia |
| Order | Anura |
| Family | Bufonidae |
| Genus | Rhinella |
Where it lives
Native from the southern United States through Central America to northern South America; invasive in Australia and elsewhere.
Behavior and toxicity
Cane toads are mostly active at night and are not shy of human settlements, often gathering under lights to catch insects. Their main defense is bufotoxin, a potent poison stored in the large parotoid glands behind the eyes. Predators that bite or swallow a cane toad can be sickened or killed, which is why the species is so damaging where native animals have no resistance.
Diet and feeding
Unusually for amphibians, cane toads are opportunistic omnivores. They eat beetles, ants, and other insects, but also small reptiles, frogs, rodents, and even pet food or kitchen scraps. This flexible diet helps them thrive in disturbed and human-modified habitats.
Habitat and range
The cane toad is native to the southern United States, Central America, and northern South America. It was deliberately introduced to many regions, most infamously to Australia in 1935 to control sugarcane beetles. There it spread rapidly and became one of the country's worst invasive species.
Conservation
In its native range the cane toad is listed as Least Concern and is not threatened. The conservation concern is the opposite: where it has been introduced, it poisons native predators and disrupts ecosystems. Management focuses on limiting its spread and protecting vulnerable native wildlife.
Frequently asked questions about the Cane Toad
Are cane toads poisonous?
Yes. Cane toads secrete a powerful toxin called bufotoxin from glands behind their eyes. It can sicken or kill predators and pets that bite or swallow the toad.
Why are cane toads a problem in Australia?
Cane toads were introduced to Australia in 1935 to control crop pests but instead spread widely. Their toxin kills native predators that have no resistance, making them one of Australia's most damaging invasive species.
What do cane toads eat?
Cane toads are omnivores. They eat insects such as beetles and ants, as well as small reptiles, frogs, rodents, and even pet food or scraps.
How big do cane toads get?
Cane toads commonly reach 10 to 15 cm (4 to 6 in) and can weigh up to about 1 kg (2.2 lb), making them one of the largest toads in the world.
How long do cane toads live?
In the wild cane toads typically live 10 to 15 years, and they can live even longer in captivity.
