The tiny Cuban tree frog can jump an impressive 1.7 m, but its relative, the larger and more muscular bullfrog, can rarely muster anything farther than 1 m in the lab. Initially, the bullfrog's dismal jumping performance was blamed on a trade-off caused by the need to jump and swim; however, Henry Astley, a PhD student from Brown University, USA, wasn't convinced: 'Other papers suggested that they had a catapult mechanism like the tree frogs, where they stretch an elastic tendon and then quickly recoil, like a bow and arrow, and if so, they should be doing a lot better than they appear to be doing in lab.' What's more, The Guinness Book of World Records documents the achievements of 'Rosie the Ribeter' a wild bullfrog who, in 1986, at the annual Calaveras County Jumping Frog Jubliee, jumped a colossal 2.2 m. Was Rosie's jump just a once in a million fluke or were bullfrogs indeed able to jump this far? If so, why weren't they performing to their maximum potential in the lab? Astley decided it was time to find out (p. 3947). Along with other lab members, Astley made the trip out to Angels Camp, CA, USA, for the 84th session of the fair. Over the course of 4 days, the team filmed jumps from both 'rentals' (frogs rented from the fair organisers) and 'professionals' (frogs hand-selected from the wild by teams that competed annually). During the breaks, the team would lay down a measuring grid for calibration purposes, but on the whole the team were able to sit back and soak up the atmosphere. 'It's a tremendously fun fair to go to and everyone was so enthusiastic about the frogs', says Astley, jokingly adding, 'Plus, how often do you have fieldwork were you eat funnel cake and hot dogs?'