This sounds like mites to me. I'd take her into the vet. :( Your guinea pig probably has mites.Take him/her to a small animal vet and they will give you the proper medicine.Don't put off going to the vet,if the mites get bad enough they can kill a guinea pig.
If the guinea pig is squeaking it is either happy or just excited to see you, or it could be hungry if it doesn't have anymore food, or water.
No, they shouldn't do. Either your piercing is healing up and hasn't had the stud in it or something is wrong and you should see your GP.
My guinea pig always falls over when I brush her so I may be brushing her to hard or she has something wrong with one of legs.somtimes your guinea pig could have a ear infection and may fall over because of that if somthing is wrong or if your guinea pig will not stand up please take it to the vet as fast as you can and keep your guinea pig warm
There could be something wrong with it's diet.
I advise that you go to a vet if you suspect anything is wrong with your Guinea Pig. If you give your pet the wrong medications you could kill or seriously harm your cavy. I strongly suggest that you visit a vet.
nothing
Your dog probably has an infection! :( oh noes!! visit a veterinarian quick as u read this!!
Take your guinea pig to the vet if something seems wrong...
take it to the doctor
Then your guinea pig has probablly a serious disease
it could be an eye infection or it caught somthing in its eye OR it possibly going blind in that eye
they breath through their nostrils like most other mammals. I dont think that they breathe through their mouths at all, but I could be wrong about that.