<P> The story introduces three male goats , sometimes identified as a youngster , father and grandfather , but more often described as brothers . In other adaptations , there is a baby or child goat , mama goat and papa goat . In any case , there is almost no grass left for them to eat near where they live , so they must cross a river to get to `` sæter '' ( a meadow ) or hillside on the other side of a stream in order to eat and fatten themselves up . To do so , however , they must first cross a bridge , under which lives a fearsome and hideous troll , who is so territorial that he eats anyone who tries to cross the bridge . </P>
<P> The story introduces three male goats , sometimes identified as a youngster , father and grandfather , but more often described as brothers . In other adaptations , there is a baby or child goat , mama goat and papa goat . In any case , there is almost no grass left for them to eat near where they live , so they must cross a river to get to `` sæter '' ( a meadow ) or hillside on the other side of a stream in order to eat and fatten themselves up . To do so , however , they must first cross a bridge , under which lives a fearsome and hideous troll , who is so territorial that he eats anyone who tries to cross the bridge . </P>
who lives under the bridge that the three billy goats
who lives under the bridge that the three billy goats
troll
troll