I bought some super worms at the Tinley show and my saly's attacked them. But what really shows off their speed is dropping a dozen crickets in the tub, they go from sluggish to lightning speed. It's different though, when they eat nightcrawlers, they just mouth them like a toad, but then they head-shake them to stun them, it's like a dog trying to pull a chew toy out of your hand, I'm suprized they don't make grawling noises.