Dog doesn't like our kid, even though she is very gentle.

Not sure if i should post this on parenting or a dog behavior sub ( let me know if there is one i should post to)Our border collie/ terrier mix is 5 years old. we've had him since he was 10 weeks. he's always been super great with kids, never nipped, only rarely give warning growls to back off if toddlers try to climb on him or something extreme like that and even then he just does a quick growl and moves away. seriously he LOVES my two nephews and gets crazy excited when they come to play ( 4 and 6).but my daughter who is almost 2, he just doesn't like. he will bark at her if she even gets near him. he wants absolutely nothing to do with her unless she has food. then they are best friends until her food scraps run out and he is back to not wanting to be around her.she is super friendly, very gentle and loves animals and gets along GREAT with my sibling's dogs, and they all love her. but my own dog, its like he is very jealous and i'm not sure how to tell him its okay we love both of them, he's not being replaced. its very much like an older sibling having a rivalry with a new baby.He is a high energy dog and i admit for a bit right after the baby was born we didn't get him out for daily running as i was the one who took him out and just had a baby. but now we are back on our daily runs, and he gets to go to the dog park like he used to.we've been trying things like, we will get him to do tricks and she will be the one handing him the treats. she throws balls for him and he brings to to me, i hand them to her to throw for him.not sure if I'm just doing something to make his behavior worse. or if he just needs more time to get used to her or what.Anyone have similar experience? what did you do? via /r/Parenting http://ift.tt/2AAYY7Z