page_title: Cascades frog
section_title: Population
hierarchical_section_title: Cascades frog / Population
caption_attribution_description: Rana cascadae English: Cascades Frog
context_page_description: The Cascades frog is a species of frog in the family Ranidae found in the Pacific Northwest, mainly in the Cascade Range and Olympic Mountains.
context_section_description: Females have a higher mortality rate than the males, but both are believed to live over five years, sometime reaching up to seven.
  Recently, a decline in the Cascade frog species has occurred, but the declines are not too serious, and usually only occur in the southern part of this frog's range. Causes are not fully known, but introduced predators such as trout and bullfrogs, UV-B radiation, diseases, and loss of open meadow habitat due to fire suppression have been suggested. Fertilizers such as urea may also pose a threat to the Cascades frogs, because the juveniles were not capable of sensing and avoiding toxic levels in laboratory studies.
caption: An adult in Mount Rainier National Park
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