If their behaviour has gone throught a dramatic change then it might be something that you have changed for the guinea pig, If it is hardly moving or not eating its food it might be depressed or upset.
You feel it
Guinea pigs make noises to show their feelings like fear or exitment.
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.
Guinea pigs hum to communicate with each other, showing contentment or excitement. It is a way for them to express their feelings and can be a sign that they are feeling happy or comfortable in their environment.
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
guinea pigs squeak when your holding them and there are no other guinea pigs in the house because they get lonely and even a bit scared so they squeak trying to get comfort or even just to talk.
yes they do. but some more than others .that is how they express thair feelings.
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!!!!!!!They are actually part of the rodent family.
Boy guinea pigs don't have nipples.