Hi! My guinea pig is currently 8 years old, and as my family are about to move to England, we have to leave him with our neighbors. We let them play with Muffin for two hours, and when he came back, he sat in a corner and did not let out any urine or feces for the whole day. What should I do? He is usually a very active guinea pig, so I was shocked when he started not moving.
Above is Muffin before going to my neighbors.
Above is Muffin before going to my neighbors.