it sounds like the compressor drive belt is loose under the hood.or the noise may be the blower motor{blower that pushes air into your car} rule blower motor out by using fan in heat mode. Or maybe a bearing in the clutch has gone out.
lack of oil
It could be the bearing in your tension pulley.
could be the throw out bearing
Her skin could possibly be irritating her or she could just be grooming herself.
loose or glazed fan belt.
It Could Be Your Serpentine Belt too tight or not tight enough.
Yes.Equally likely is if the belt is much more than 3-4 years, the material is glazing over or hardening, which is another common cause of squealing.
Got under the truck and it turned out to be the front differential! Wasn't even squealing in the rear like I thought!! Thanks tho cause i thought the universal joint also but checked it anyway!
it could be a serpentine belt or accessory belt.
A worn or loose out of adjustment drive belt could be the cause.
It could be a bearing in an idler pulley.
it could be allergies it could be pink eye or it could just be your're rubbing it alot. or it could be something is irritating it