On May of 2018 my daughter purchased a guinea pig at Petco and was told it was a female. If at a later time we wanted to purchase a companion we were advise to buy another female guinea pig. The following month my daughter bought a female guinea pig. However when she place the pet inside the cage the so called female guinea pig immediately attempted to climb on top of the one we had just purchase. We realize right away that the first guinea pig was really a male. Shame on you Petco, get your genders right.