I have two boys and they are both 4 months old and came from the same litter. It seems like one of them (Macchiato) is definitely going to be the boss around the cage, as he’s always weighed more than his brother (Brick Layer) and he seems to be a bit more stingy when snacks are involved. But recently we’ve noticed that Macchiato will occasionally throughout the day just slowly lift his head as far as it will go back and squeak loudly for a second. I know it’s not like a seizure because i’ve seen a guinea pig have a seizure. But picture a guinea pig doing the same motion as a dog throwing its head back to howl. I’ve tried looking it up and i can not figure out what the heck my boy is doing or if i should worry at all.