All 3 of my Guinea Pigs are boys two of them are brothers from the same litter (Reeses and Panda) and the other one (Elvis) is the oldest cannot be put together at all. The two brother live together but at no point can all three of them be together. They are very sweet boys but theyre shy to new people. Elvis loves to run around and be rubbed and Reeses and panda love to eat and run around. I typically renew their hay twice an and change their water everyday. I fill up their bowl with food and that lasts them a few days if needed the food can be changed because sometimes they spill it.