Um...it would usually cry in pain..duh. And if it doesn't, it would either walk awkwardly, or not move at all because of the extreme pain.
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.
Yes they will weep.
Play with them a lot and watch them
Guinea pigs can smell very well, they have good hearing and they feel things. They can see just about as good as we can
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.
Boy guinea pigs don't have nipples.
9 to 10 weeks.
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. )
You Can't Really Tell Unless You Take It To A Vet. :] -Hope I Helped
One way to differentiate between a hamster and a guinea pig is by size. Guinea pigs are typically larger than hamsters. Additionally, guinea pigs have rounded bodies with shorter legs compared to the more slender bodies and longer legs of hamsters. Hamsters also have shorter ears and tails than guinea pigs.
You get a treat, then you tell it to do something and then help it out, and then you give it the treat!! ( This is true!)