I'm not sure. She's a purebred animal shelter mutt. I call her the Frankenstein dog, because she looks like she was made out of spare parts. Here's another picture showing her body. Pretty sure there's some Beagle in there, as well as Bassett or Corgi (short legs).
She can hike, though. We'll put in 11 hr days in the summer, and she's right there with me.