green (tree) frog

like father, like son

curved wooden support on top of the main beam of a house, now mainly decorative (shape evocates an open-legged frog)

breaststroke (swimming)

like water off a duck's back

toad with wart-covered skin (esp. the Japanese toad or the wrinkled frog)

like water off a duck's back

frog (esp. the wrinkled frog or Asian grass frog)

bullfrog

tree frog (toad)

annoying noise

frog in a well

narrow perspective

frog calling

a narrow-minded person cannot understand the ways of the world

sound of frogs croaking

the frog in the well knows nothing of the great ocean

person who is ignorant of the real world

frog hunting ritual