I don't let Zhoie play with dogs bigger thatn she is (4.5 lbs), simply put, I will not risk it. The dangers to these little is go great, I don't want to add anything to the list. lol.
I don't know how big your dog is..but keep in mind, when this pup grows, he's strength will become massive and he won't realize how easy he can injure another smaller dog.
I would rather be safe...than sorry after the fact. IMO.
Good luck with whatever choice you make.
__________________ Tena & Zhoie  Sweet Little Miracle |