grumble while eating

Around 2 weeks ago my 4 year old male pig Nutmeg started making a weird grunting noise - the same noise older piggies make when they clean themselves but repeated for a few minutes at a time, it was only happening while he was eating and occasionally whilst sleeping, and went on for about 6...

My guinea pig named Hotdog has been making weird grumble noises whenever he’s eating and I’m worried. Despite that he seems completely fine, squeaking and doing his usual guinea pig things. However, I have noticed he’s being a bit more tired? Since he usually always runs around and tries to...