This is a personal choice, I don't think there is a right or wrong way.
Take my son for instance, he started playing with our dog when he was just a few months old. My husband and I absolutely have no problem with it. We just make sure we wash our son's hands after he plays with the dog.
It's so beautiful to see the interaction between the two of them. My son is only 17 months old but when he wakes up and sees the dog outside his bedroom, he will laugh heartily and run over to give the dog a cuddle.
Our dog is a Golden Retriever, a breed known to be extremely friendly and patient with kids. Even so, I never leave them together unsupervised.
If you do decide to let your kid play with dog, make sure you teach your kid to be gentle and respect the dog's need for its own space. In addition, don't forget to praise the dog if it's good with the kid.
Devlin mama, I agree with your opinion. It's really a personal choice.
Between, Golden Retriever is large in size. Do you afraid if the dog lose the temper sometimes and do something harm to your kid?
We have the dog for over 4 years now and we know his temperament inside out ... he's a big softie, just a gentle giant. Still, we are mindful of his size and as I've said in my earlier post, we never let them play together unsupervised.
From the start, we teach our son to be gentle to the dog, not to pull his tail and ears and when the dog is sleeping, don't interrupt his sleep. If we find our son has been too full on playing with the dog and looks like it needs some time to be away from the kid, we'll take the dog out to the verandah or put it in the kitchen.
So far, they've got on really well. I won't say I'm not worried about the dog losing its temper but I won't let this worry interfere with their interaction and that's why we always supervise their play.