• Introduced by the state as wild game for hunters, bullfrogs have made Arizona their new home on the range. With no natural predators and plenty to eat, the bullfrogs are taking over. Wild Chronicles follow conservationists' fears that these big bullies may be devouring native species. Can they be stopped?

    1. Bullfrogs are an introduced species. In what habitats did they make their home in Arizona?

      Bullfrogs settled in cattle troughs, irrigation ditches, and fish ponds, as well as naturally occuring wetlands.

    2. Cecil, the biologist, calls the bullfrog "an eating machine." What are some of the animals bullfrogs eat in Arizona?

      Bats, snakes, tarantulas, turtles, other frogs, fish, mice, and scorpions have all been found in bullfrog bellies.

    3. Bullfrogs are not native to Arizona, but they are native to the swamps of Louisiana. What predators feed on bullfrogs in this native habitat?

      Alligators, snakes, birds, and human beings prey on bullfrogs in Louisiana.

    4. What native species of frog is threatened by the bullfrog in Arizona?

      The bullfrog puts the smaller leopard frog at risk.

    5. The video shows two methods of protecting native species from invasive bullfrogs. What are these methods?

      A "frog-proof fence" protects small populations of native species. Hunting bullfrogs (shooting them) is the main method of controlling their population.

  • Term Part of Speech Definition Encyclopedic Entry
    conservationist Noun

    person who works to preserve natural habitats.

    frog Noun

    animal (amphibian) with smooth skin and long hind legs for jumping.

    game Noun

    wild animals hunted for food.

    native species Noun

    species that occur naturally in an area or habitat. Also called indigenous species.

    predator Noun

    animal that hunts other animals for food.

    state Noun

    political unit in a nation, such as the United States, Mexico, or Australia.

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