For the past week i have been bringing benji in at night to get him used to being indoors for the winter, he has a very large cage within a sectioned off area which is 8foot x 5foot the cage door is open all the time, i brought his litter tray in from his shed. My concern is no matter what i have tried he will not poo in the house, he has always been like this, he comes in and out of the house freely all day long , as soon as he needs to poop he goes outside, this is great in the day, but at night he "holds" his poops in and as soon as i let him in the garden he runs straight to his "spot" and does loads of poops. How can he do this and will it do him any harm? I think he thinks he's a dog!