Riddles from The Hobbit
A hobbit and golem go through a riddle contest if golem wins he get to eat the hobbit if the hobbit wins he gets to escape. Here are 2 that they answered. If you want to know all the riddles get the book and look for the riddles on chapter #6.
Alive without breath,
As cold as death;
Never thirsty, ever drinking,
All in mail never clinking. = fish