He has webbed feet, an angular, athletic body, and moves with the speed of an olympic athletic.
He has found the pool.
When Buck walks Maggie each night before lights out, the bullfrog is in the deep end of the pool. Buck “rescued” him several nights running, but each time, he returned the next evening. By morning, he is gone.
He is a big frog in a small, ozonated, slightly chlorinated pond.