like father, like son; the apple doesn't fall far from the tree; (lit.) the child of a frog is a frog
like water off a duck's back; (lit.) water on a frog's face
like water off a duck's back; (lit.) water on a frog's face
like water off a duck's back; (lit.) urine on a frog's face
like water off a duck's back; (lit.) urine on a frog's face
curved wooden support on top of the main beam of a house, now mainly decorative (shape evocates an open-legged frog)
chytridiomycosis (fatal infectious disease of amphibians)
frogfish (any fish of family Antennariidae, esp. the striated frogfish, Antennarius striatus)
breaststroke (swimming); frog-kick
springtime mating of frogs (haiku term)