My 8th month old wont sleep out of his cage.We take him out and play frisbee with him for about 30 minutes and let him lay there for about 20 minutes.We bring him in and he will lay down but he will get up and lay back down he will keep doing this for hours.Another weird thing he started doing was laying in my walk in closet but he will get up in a few minutes but anyways as soon as we put him in the cage he will lay down and fall asleep..