Yes, guinea pigs can eat carrots but not all guinea pigs will like to eat carrots. It is really up to your piggy if they will want to eat it or not.
It is important to note that moderation is important when giving fruits and vegetables to your guinea pig because too much of anything can be a bad thing. Depending on your guinea pig their taste preferences will be different just like humans.
If you want to try carrots with your guinea pig make sure to wash them thoroughly first and make sure there is nothing on the outside of them such as pesticides or other chemicals.
Give only a bit to your guinea pig at first and if they like them give a bit more.
As mentioned above don’t give too much as too much of a new food can cause them to have digestive issues.
The most important thing for a guinea pig is to have a well rounded and healthy diet which includes fresh water, timothy hay and guinea pig pellets.
Occasionally you can give fruits as a treat to your piggy as well.