My guinea pig is about 3 years old. he wasnt eating or drinking much and didnt have the same personality. we took him to the vet, who said he is blind. i need to handfeed him everyday because he cant find his food, maybe because his sense of smell is gone too. My guinea pig lost a lot of weight, too. When i try and handfeed him he turns away from the food, even though he barely at anything. is he depressed? he doesnt make much noise and doesnt move very much. i dont know what to do. i dont want him to starve. please help!