Yes they sleep with their eyes open. Mine also sleeps on his side, they WILL scare you and act like they are dead.Aww tyty I give him tons of name I haven't set on a current one. Sometimes I call him bunziboo. Then I call it hay hay. Cuz it loves to eat the hays. I really love him. It's like when I look at him one side he will look brown and then the other side will be whitish brown. Well..they sleep with their eyes open right? Funny. I wanted a week old guinea pig but they didn't have any. So I picked him out. He's still cute.
You have been warned...