Posted By: Gulo
Photo Phriday 24 - 11/26/21 01:09 PM
This one probably not of widespread interest to the trapping community, but nonetheless intriguing to me. The Northern Tailed Frog (Ascaphus montanus) is pretty unique. Only found in the cold, rushing, boulder-filled streams of Montana and Idaho (and a few places in Washington), this is a weird little frog. Only known frog with internal fertilization, the males retain part of their tail into adulthood, which becomes a penis for copulation. Because the rushing streams are so noisy, they also have no known voice, as it probably couldn't be heard more than a short distance anyway. The "tadpoles" have a series of teeth on their mouth that allows them to "suction" onto rocks, and they take up to three years to morph into adults, thus, they are active throughout the winter in these cold streams.
This is a metamorph that hasn't yet resorbed its tail.
This is a tadpole that is starting to grow hind legs and shows the teeth rows it uses to hold onto rocks and feed on micronutrients.
This is a fully morphed adult male showing the small retained tail which becomes a "penis" for copulation.
The fully morphed adult. Endearing little sucker, huh?
Jack
This is a metamorph that hasn't yet resorbed its tail.
This is a tadpole that is starting to grow hind legs and shows the teeth rows it uses to hold onto rocks and feed on micronutrients.
This is a fully morphed adult male showing the small retained tail which becomes a "penis" for copulation.
The fully morphed adult. Endearing little sucker, huh?
Jack