Cane Toad (Rhinella marina)
Order Anura, Family Bufonidae, Genus Rhinella, Species R. marina
Species
Cane Toad (Rhinella marina)
Family
Order Anura, Family Bufonidae, Genus Rhinella, Species R. marina
Size
Adults range from 10 to 15 cm SVL, with exceptional individuals reaching up to 24 cm; females are typically larger than males.
Conservation
Least Concern with a stable or increasing population trend due to invasive success and high adaptability.
Description
A massive, stout amphibian famously known for its ecological impact as an invasive species in regions like Australia.
Key Features
Prominent parotoid glands behind the eyes, bony cranial crests, and large, robust warty body structure.
Physical Description
Robust, heavy-set body with dry, warty skin, short legs, and prominent, triangular parotoid glands behind the eyes.
Skin Texture & Coloration
Extremely warty and dry skin, mottled brown, olive-green, or greyish dorsally, with lighter, yellowish or cream-colored undersides.
Distinguishing Features
Large parotoid glands, pronounced bony ridges above the eyes (crests), and lack of true toe webbing on the hind feet.
Habitat
Highly adaptable, found in open grasslands, forests, shrublands, agricultural lands, and urban suburban backyards.
Geographic Range
Native to South and Central America; widely introduced globally, including Australia, Florida, and various Pacific islands.
Behavior
Nocturnal and terrestrial; walks rather than hops; secretes toxic bufotoxin from parotoid glands when threatened.
Diet & Feeding
Generalist carnivore eating insects, small vertebrates, rodents, reptiles, and other amphibians using a sticky tongue.
Reproduction
Breeds in standing water, ponds, and slow streams; lays long gelatinous strings containing thousands of small black eggs.
Vocalizations
Low-pitched, long, musical trill or purr resembling a distant motor or engine idling, lasting several seconds.
Life Cycle
Eggs hatch into tiny black tadpoles within days, metamorphosing into small toadlets in 4 to 8 weeks depending on conditions.
Conservation Status
Least Concern with a stable or increasing population trend due to invasive success and high adaptability.
Toxicity & Defense
Secretes potent bufotoxins (bufagin and bufotenin) from parotoid glands, toxic and potentially lethal to domestic pets and predators.
Ecological Role
Acts as an apex terrestrial amphibian predator and an invasive disruptor in non-native ecosystems.
Similar Species
Southern Toad (Anaxyrus terrestris) and Cane Toad look-alikes, distinguished by cranial crest structure and size.
Observation Tips
Look near outdoor lights at night, around patios, gardens, and urban lawns where insects gather to feed.
Handling & Safety
Do not handle bare-handed; toxins can irritate human eyes and mucous membranes and are fatal if ingested by pets.
Seasonal Activity
Active year-round in tropical regions, reducing activity or seeking refuge underground during cooler winter months.
Cultural Significance
Infamous pop-culture icon, featured in documentaries regarding invasive species management and environmental impact.
Interesting Facts
Introduced intentionally to agricultural areas for pest control, notably leading to massive ecological disruption in Australia.