Thanks to Leapfrog (Art) for the identification, I didn't have a clue what this could be when I took a picture, but I was totally fascinated by the prickly exterior and fabulous texture! They range in size from 3"-4" in diameter. I didn't take any because it wasn't my property, but I wanted to see what they looked like inside! Maybe I'll see about getting one the next time I'm over there! :) Stay tuned for an interior picture in a couple of weeks! :)