Moms are very protective of their babies and will not let any other dogs even look in the direction of the whelping box. That is why it is so important to have secure, private spot for moms and their babies. Anyway - now that the babies are 4.5 weeks old, they can meet the other dogs...but I have to sneak. When I put Sparkle outside, I let in a dog to sniff the babies. These pictures are of Lola (big sister) sniffing her little brothers. It's all on the Q-T...shhhhhh...don't tell Sparkle.