My little sister was recently gonna give away her guinea pig, so I took it in instead. Almost immediately I noticed it had loud breathing specifically while laying down, and is sneezing quite often. This morning however its breathing got louder accompanied by a clicking noise. She also is sleeping more than what she normally would. Her appetite seems normal, and will even get out of bed to eat lettuce out of my hand, but I'm still very worried. I just put a steaming bowl of water near her cage hoping it would help clear her nostrils but haven't seen any change yet. I've inserted a video at the end of my guinea pig breathing and interacting. she sneezed right after I quit recording. any knowledge or suggestion would be greatly appreciated. Video of guinea pig breathing.