BuryFCA1 Posted January 10, 2014 Share Posted January 10, 2014 Recently our 18 month old guinea pig has been acting very aggressively. Not towards us but he has been almost attacking and flipping off the roof on his house. He has never acted like this before and we are unsure what might be the problem. He is getting the same food as normal and in the same amounts and he is being cleaned as regularly as ever. Please provide us with some answers anybody Quote Link to comment Share on other sites More sharing options...