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Mountain Chicken

Leptodactylus fallax

Did you know?

  • Mountain chickens are frogs!
  • They are part of the Leptodactylidae, which they share with a diverse group of frogs.
  • Their name comes from its massive size; this frog can reach a weight of 2 pounds and measure as long as 8 inches.
  • They build nests with foam they secrete for their eggs.
  • They are excellent parents that care for and protect their young.

Opportunistic Omnivores

Mountain chickens can be predators with a voracious appetite and will consume almost anything that can be swallowed whole, including tarantulas and small mammals.

A Unique Voice

The male’s breeding call consists of a repeating “whooping” noise.

Threat Level

  • Unknown
  • Common
  • Near Threatened
  • Threatened
  • Endangered
  • Critically Endangered
  • Extinct in the Wild

Critically Endangered

The Mountain Chicken faces an extremely high risk of extinction in the wild.


Dominica and Montserrat (in the Caribbean)


Rain forests

We care about mountain chicken frogs

The Saint Louis Zoo supports mountain chicken frogs in the Charles H. Hoessle Herpetarium. Learn more about how we are helping wildlife around the world.

Dedicated to Conservation

Find this animal in Historic Hill


Historic Hill

Historic Hill is a lovely stroll through one of the oldest parts of the Saint Louis Zoo. From the 1904 World’s Fair Flight Cage to the Spanish architectural flavor of the 1920s in the Bird House, Primate House and Herpetarium to the finishing touches of our thoroughly modern exhibits, this area of the Zoo has a unique ambiance and a nostalgic history that make it a great destination.

Explore Historic Hill