Description
The Idaho Giant Salamander is the darkest and most intricately blotched of the Giant Salamanders. Varying between brown, purple, tan, grey, and a copperish color, Idaho giant salamanders are large and robust predators. Tiger Salamanders and Idaho Giant Salamanders have superficial resemblance pertaining to size and shape, but the costal grooves and foot tubercles are significantly different between the two species. With a defining thick head and body along with a fourth toe on the hind foot with only three segments; this species of salamander has its own unique features. Adults are typically 20 cm in length but may vary between 7 and 11.75 inches long, but can be observed around 13 inches.
Small external gills adapted for small stream living can be found on their larvae. Their larvae are usually tan with yellow blotches over their dermis. They can undergo paedomorphosis, but most become mature adults.
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