Big grass snake catching a frog / Culebra de collar grande atrapando una rana

A large grass snake was lying in wait for a frog. If the frog had moved, the snake would probably have attacked it immediately. But suddenly another frog jumped into the water next to the snake and the grass snake immediately attacked it. Note that the first frog sat still at the beginning when the snake attacked the other frog / Una gran culebra de collar estaba al acecho de una rana. Si la rana se hubiera movido, la serpiente probablemente la habría atacado inmediatamente. Pero de repente otra rana saltó al agua junto a la serpiente y ésta la atacó inmediatamente. Observa que la primera rana se quedó quieta al principio cuando la serpiente atacó a la otra rana.