If I'm using a prop like I was this time, it tends to slow them down as they want to explore it. Also, if you're just using a plain background, a bowl over them, quickly take it off, then snap away is the best way I've found. Getting used to taking 200+ pics for a couple good shots is something I've gotten used to with my corns. Ceti, my ball, is still making it easy by moving more slowly though those pics were out of about 50-60 shots. The rest, I scrapped for color/blur issues.