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Cope's Giant Salamander vs. Pacific Giant Salamander

Cope's Giant Salamander is almost always a gilled stream larva, and so is the commonly seen Pacific Giant. A: Slimmer, a narrower head, short legs in the Cope's Giant Salamander; stout, a broad head, long legs in the Pacific Giant Salamander. B: Blotched on the sides in the Cope's Giant Salamander; marbled (land adults); larvae mottled in the Pacific Giant Salamander. The Pacific Giant's tail fin starts near the back legs; Cope's starts farther back. Cope's lives only in the far northwest.

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Cope's Giant Salamander

Dicamptodon copei

Pacific Giant Salamander

Dicamptodon tenebrosus
Cope's Giant Salamander vs. Pacific Giant Salamander: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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