Same reason you do
parrots sleep yp in the trees
He drools in his sleep.
sleep with your mouth open or drool
they sleep the most
No.
You might stop drooling in your sleep if you sleep on your back. Most people who drool in their sleep are laying on their side or on their stomach.
A parrot will balance on the branch of a tree and tuck its head under its wing to sleep.
Kakapo are nocturnal, flightless parrots. During the day they sleep in burrows, hollow logs or under tussocks.
It's fairly normal. Most pit bulls drool, but I've never seen one sleeping. They mostly drool when hungry or needing something (example: to relieve him/herself). Nothing serious, unless he's foaming.
to drool = Babear
sleep, all birds but owls sleep at night, their eyes are most similar to humans, so they cant see when it is dark.
Yes a cat can drool