there are a number of animals that are loud, but us humans can only hear sound on certain decibles, but I belive that the loudest animals would be the whales
nothing
An elephant
a duck
You
parrot
Fruit bats.
Blue whale
Birds twitter and tweet.
I am not familiar with Maine, but as an amatuer bird-watcher, I would guess it's a screech owl, you could try finding a recording of it online, audubon.org has a lot of birding links Or it could be a bobcat, or short eared or long eared owl. Also, the barred owl makes a horrible sound in some of its calls. Go to the Cornell site, "All About Birds".
Your throw out bearing is making noise.They almost always make noise.If it is not a loud shrieking noise it is perfectly normal.
it makes sharp sound
a gecko, its a lizard