Grooming your guinea pig can be excellent for bonding.
Hair Styles are fun too!
Pet Guinea Pigs have A LOT of hair to style.
Your guinea pig's coat should be well groomed, with no bare patches or red patches.
The eyes are the windows the soul and if you make eye contact and focus on what they might need it seems like they are trying to tell you. Smart small animals will signal certainly and it's up to us just to pay attention. If you find that your guinea pigs are still too shy it's okay. They're prey animals so they will not want to express their illnesses and weaknesses.
Ears should also be clean and free from discharge. Check the fur around the eyes and nose for signs of wetness, staining, or crusts.