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Amphibians of Washington


Columbia spotted frog
(Rana luteiventris)

 

What they look like

  • Up to 10cm
  • Bumpy light brown or olive green skin with dark spots which are lighter in color in the center
  • Underside is reddish including the back legs
  • Have folds of skin down the sides of their back
  • Very similar in appearance to Rana pretiosa

Where they live

  • In Washington State are found in the Cascades and in Eastern Washington
  • Prefer slow moving, quiet water with lots of plants including wetlands and water sources in damp forests

Breeding

  • Breeding season is February to July
  • Prefers slow, shallow warm water in permanent water sources to lay eggs
  • Eggs eventually will get covered by algae and turn a greenish color
  • Eggs are laid in groups with other females, sometimes 25 or more masses can be found together

Cool Biology Facts

  • Originally thought to hibernate all winter in mud under water, but there has been evidence that they actually move around under the ice in winter
  • Will migrate to find new water sources in dry seasons when their water sources dry up
  • Sometimes they like to bask in the sun!

Photo

Distribution Map

Threats

Current population is decreasing. Main threats include introduced species, such as fish and bullfrogs and habitat loss