are the stools well formed or soft and runny? If they are runny it could be an infection in his digestive tract or an intolerance to the food. Burns food, or James Welbeloved are good and hypoallergenic - Skinners duck and rice hypoallergenic in the field and trial range is very good too, and cheaper. But doing pees and poos and sleeping in it is unusual - was he from a puppy farm or bred in a home environment?