Dog and newborn

Hi,

We've got a dog who is 4, do it's already grown. We never had any problems with her playing with kids. Every holiday with familly, kids were all over her, and she had always great patience and can play with them for hours.

Now I'm a bit afraid it's not going to be the same story with our new born. My son is 7 months, do he's not walking yet. Currently our dog likes to sometimes approach our son and start licking his legs and face. (She really loves great like this everyone and she's always friendly with friends, and strangers). We cannot let her play like this too much, cause he has sensitive skin and has a red spots on the skin. We always just tell her politley that it's enough for now and everything is okay. The problem is that if our son is playing around on the floor and roll next to her by his own, she's not allowing him to touch her. She growls and move away. From what I know our dog, it's doesn't seem like aggresive growl but more like - I'm anoyed, leave me alone growl.

Do you know, why she's acting like that? She alows other kids to play with her, approach any time, but she's not like this with our son. It's the same if I'm in the room, or only my wife, or we're all together. Is there any way we could work on that or we should just give our dog some time, maybe she's not comfortable with such young kids, or she's just super jelous over us.

Thank you in advance for any tips!