Oscar the Owl.

Oscar the owl was very tired. He had been playing Hide and Seek all night
with Reggie Rat. Resting upon a limb high in tree with both of his eyes
closed he heard the sound of a chain saw revving up. He raised his right
eyelid and saw a Lumberjack cutting down another large tree. Then Oscar
raised his left eyelid and saw one of his friends Darleen Deer grazing in
the direct path of the falling tree.

Oscar began shouting, "Whoo", "Whoo", "Whoo".
But it was too late. The tree fell on and crushed his friend.

Oscar felt really bad because he never learned how to yell "Timber".