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Facts about Cane Toads

6 facts squeezed so far
  1. 06

    The parotoid glands behind cane toads' eyes produce enough toxin to kill a human-sized animal, with a single toad containing enough poison to eliminate five adult dogs.

    Cane ToadsMay 14toxicologybiologymeasurement
  2. 05

    Cane toads have invaded over 1.2 million square kilometers of Australia since their 1935 introduction, spreading westward at an average rate of 40 kilometers annually.

    Cane ToadsMay 14geographyinvasionmeasurement
  3. 04

    Across their native range in Central and South America, cane toads are kept in check by jaguars and caimans that have evolved immunity to their toxins over millennia.

    Cane ToadsMay 14evolutionpredatorgeography
  4. 03

    Cane toads can grow to 23 centimeters in length and weigh up to 2.6 kilograms, making them among the largest toad species in the world.

    Cane ToadsMay 14measurementbiologymorphology
  5. 02

    A single cane toad can lay between 8,000 and 30,000 eggs in gelatinous strings during each breeding season, enabling rapid population expansion across invaded territories.

    Cane ToadsMay 14reproductionbiologyinvasivespecies
  6. 01

    Introduced to Australia in 1935, cane toads secrete bufotoxins from their skin that kill most native predators attempting to eat them.

    Cane ToadsMay 14biologyhistorytoxicology