so I took ernie to my breeders to meet a female pup thinking this will be the only way I will be able to bring another dog into my home.(we have a 14 year old boxer that ernie was raised with and they live side by side together). The pup is very social and outgoing and not obnoxious about it. The senior boxer is very accepting of her and interested. Ernie is completely aloof and will not come near her. When she tries to approach him he jumps back . I find this strange in such a young dog. Ernie goes to daycare 1x a week and has his entire life to keep him social with dogs. It is hard to say if he plays at daycare because most of the time when I see him they are all just wandering around together...but he is with the dogs wandering. The breeder let me take her home for a few days to see how Ernie does with her....any suggestions?