Coco, who is 4, loved our grandson, Michael, as a baby. She would cry when Michael would cry. Now she avoids him when possible. If Michael gets close, she growls. I know she is warning him to stay away, so we make sure that happens. Lola, on the other hand, loves Michael, and she is a year old. If he goes up to her, she licks his hand and has never growled or even acted scared of him. Michael was 18 months during their last exposure to him, so he's everywhere in the house. I'm not going to try to get Coco to be friends with him. We will keep them apart. We didn't have Lola when Michael was a baby, so who knows? Coco has always LOVED being around children and has shown no signs of biting anyone, but when she growls, we know she is warning that she isn't happy about the situation. I don't know how you are going to deal with this. If your dog doesn't act happy around your baby, then keep the dog away. That's my best advice.