Three I have 3 yorkies, two girls 7 months and a boy 9 months. They sleep together everynight. They love each other and huddle together. Dogs are known to be pack animals so I think it is normal. I am concerned that when one of the girls goes into heat they will have to sleep seperate. At that time I will keep the girls together and maybe treat him by letting him sleep in my bedroom. My dogs get upset when they are not all together. If I were you I would put them together in it while you were there to supervise at first.
Tauni |