Owls hoot for the same reason all animals vocalize: in order to communicat. In this instance, owls which make a hooting noise do so to communicate with other owls.
They are mad at you or something to close to them
Well it's because an owl's beak is useless... A cardinals' beak is useful,it really uses it.
with their beak.
to scare you away
owls do not have theet's but they have a large sharp beak
by flying to there target and catching it with there beak
because they have
Owls don't have teeth.
No, for the movie they made a serperate character for Metal Beak. In the books Kludd is Metal Beak.
Barn Owls are strange owls but not like other owls. Barn Owls have long claws and a enormous beak to peak at animals and plants so they can eat them.
they stab it with there beak and tear the insides and swallow it whole
All owls are raptors, or birds of prey. Which is to say they seize prey in their talons and kill it off with the beak usually. Even small owls like Burrowing or Flammulated owls, which eat insects largely, catch them this way. This is in contrast to a swallow or egret, which just use their mouth/beak, and don't have lethal talons.
Most predators(such as owls) have eyes on the front of their head because it makes depth perception possible, which is very useful when hunting.