#penis

My guinea pig who was given to me as a female by a petstore turned out to be a boy (i think) after a month of having him, i searched how to sex a piggy and i saw his penis i guess. My piggy not later after that, had his balls a bit more swollen that usual. I brushed it off because it didnt seem...

What can this be? I'm desperate. It appeared at the end of the day.