Burke Museum Home

Amphibians of Washington

Pacific Treefrog
(Pseudacris regilla)


What they look like

  • 2-5 cm
  • Green, grey or reddish brown with small dark splotches along sides.
  • Has a dark mask across the eyes from nose to shoulders and a Y shaped mark between eyes.

Where they live

  • Found throughout Washington
  • Can be found far from water in woodlands, forests and meadows
  • Usually lives on the ground (despite name) and hides in underground burrows
  • In breeding season, will converge in water habitats


  • Breeding season is November to July in permanent or non-permanent water sources.
  • Males become territorial when breeding and will fight over prime spots in breeding waters.
  • Eggs are attached to sticks or other underwater debris in the shallow low flow areas of ponds or lakes.
  • Tadpoles stay in groups, possibly as a means to avoid predators and take up to 3 months to complete metamorphosis.

Did you know?

  • Can change skin color quickly from light to dark or vice versa to blend with environment.
  • Have glands in skin that secrete a waxy substance that protects their skin from drying out.
  • They are diurnal, being active day and night.


Distribution Map


Main threat is introduced fish in breeding ponds that eat eggs and tadpoles.