TaxonHub
Foothill Yellow-legged Frog

Foothill Yellow-legged Frog

Rana boylii

A small, semi-aquatic amphibian native to western North America, characterized by its yellow-tinted legs and cryptic coloration for stream habitat camouflage.

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Foothill Yellow-legged Frog
Foothill Yellow-legged Frog
Foothill Yellow-legged Frog
Foothill Yellow-legged Frog
Foothill Yellow-legged Frog
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Ecology & Habitat

Habitat

Perennial and intermittent streams in coastal and mountain regions of California and Oregon, typically inhabiting rocky stream margins with moderate water velocities

Ecological Role

Critical indicator species for stream ecosystem health, serving as both predator and prey in riparian food webs, sensitive to environmental changes and water quality

Morphology

  • SKIN COAT Mottled brown or gray skin with granular texture, providing excellent camouflage against rocky stream substrates
  • LIMBS WINGS Short, muscular limbs with webbed feet for efficient swimming, yellow-tinted leg coloration
  • HEAD SENSORY Large, prominent eyes with lateral positioning, providing wide visual field for predator detection
  • BODY STRUCTURE Small frog, typically 4-8 cm in length, with robust body and flattened head adapted for stream environments
Data Source: TaxonHub Database
Image Credit: Saskia Keller, USGS National Wildlife Health Center. Public domain.
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Related Species in Ranidae