temperature change

Hello, my Piggy is 2months old (and he's single for now, hopefully we'll get him a companion soon). Since we live in a building, unfortunately we can't take him outside but we give him some floor time on balcony where he runs around and hides. His cage is also on the balcony and there weren't...

Bear and Lottie are currently living outside but I'm thinking of bringing them inside because they look miserable all the time at the moment. But I'm confused about the fact that Temperature Changes are dangerous to Guinea Pigs, I've had a noisy about on the forum and have been people saying...