Identification

[rpatt]

I was walking the new Kwis Kwis trail at Lewis & Clark NHP in Astoria, Oregon when I came across this frog. The rangers had never seen it before and had no real ideas of what it might be. There are lots of Northern Red-legged frogs here but I do not think that it is an adolescent form. Any suggestions welcome.

Thanks.

[Bombina Bob]

The frog looks similar to what a Rana species would be, i do not recognize
the frog, and ive never seen pitch black eyes on a north american frog

[UncleChester]

I'm not too familiar with the frogs of Oregon, but the apparently black eyes do make a pigment problem seem possible as none of the Ranids from Amphibians and Reptiles of Oregon have black eyes and I don't know if this is even something that any North American (or other??) species has as a regular feature.

You can see what is perhaps a similar malfunction in the photos below of a Rana clamitans that was initially nearly all black with black eyes (The pictures span 3 years). As she grew, the eyes remained black but the body became blotchy. Something with it was obviously messed up, but I don't know if this sort of thing has a name. I've found a Rana pipiens that was noticeable darker in the eyes (and skin) from other Leopard frogs, but not quite pitch black.

It's too bad this thread is so old and was originally missed. Hopefully the original poster has subscribed via email and can come back with more pictures.