To be fair - my pure SD is very squirmy and flighty as well. You can put him in a tub on the ground to clean his cage and two seconds later he will be gone if you aren't watching him. However, anything and everything else that I have that is a mix of SD and Dwarf blood is extremely laid back and less flighty. With the only real exception being my adult male 50% SD Tiger who can be flighty for the first couple of minutes on the day before feeding when he knows its getting close to feeding time. Other than those instances though, they handle very, very well.