Well, if you sneeze a lot around them, (fur allergy)
I find i sneeze a lot around my guinea pigs - but that's mainly because of the hay, as its very dusty, so if you are sneezing quite a bit it may be the hay, but if it gets really bad, go and ask your doctor about it.
You feel it
Every guinea pig has their own personality, it is impossible to tell which guinea pigs they'll get along with and not get along with.
Play with them a lot and watch them
Yes they will weep.
Guinea pigs can smell very well, they have good hearing and they feel things. They can see just about as good as we can
No!!!!!!!They are actually part of the rodent family.
Baby guinea pigs will usually fit right into the palm of your hand, and have quite large feet; adult guinea pigs are easily the size of a football.
No.
Boy guinea pigs don't have nipples.
9 to 10 weeks.
I have three
Unlike cats or dogs, guinea pigs cannot tell if you sick. There brains are so small all they know what to do is find food,run, and find a shelter. (other guinea pigs CAN do many other things- but in my opion, this is my anwser. )