Humbert is a big boy now, so I bought him a treadmill appropriately-sized for his body (too-small wheels can permanently damage a hamster's back). This one's a "Flying Saucer" in "Battlestar Blue." Humbert is now a sci-fi fan (Battlestar Galactica, anyone?). Even just a few minutes after I recorded these two videos, his saucer-running skills had improved. I'll have to record him going full-speed one of these days once he really figures it out.