Hello, I've had Ace my guinea pig (she's a girl about 6 months I believe) since April. I got her from the pet store, Jack's Pets, and she's white and black. Behind one ear on her bald spot is pink skin and behind the other is black skin and it's brown spotted. She never scratches unless i catch her doing what i believe is cleaning herself. She'll rub her eyes and then her mouth and then her body and be done. No sign of infection or pain or any other scratching.
I just got a male guinea pig today and he's tan, white and black and has pink skin that's brown spotted behind each ear. No signs of scratching besides him doing the same cleaning thing today. but other than that nothing. are brown spotted skin (i've checked everywhere else, only behind the ears) normal??