Billy is from Yellowstone National Park in Montana. When Billy is looking for a pick-me-up he wallows, which means that Billy will seek out a depression in the soil full of mud or dust and he'll roll around in it. It's not clear why bison like Billy do this, but once they're done, they're happy Ol' Faithful is just around the corner, for a good ol' geyser shower! - Size: 10 x 4.5 x 6.5 in inches