I have Labrador Retriever, a full blooded and a mix. I let the "mix" lab, Tracey in the chicken pen with the chickens, while supervised in their myself as well. she never bothered the chickens. She was more interested in eating the watermelon the chicks were eating on. The chicks were curious and clucked about it, but Tracey went about her business sniffing the chicks, the yard and all over. As far as children, I think labs are the best. The mix lab I have is 65-70 lbs. She use to be a yard dog, but because of my neighbor shooting dogs, i brought her in the house. She sleeps in the kennel and is in the kennel while I'm at work all day. She does very well. She does bark when she see people drive up, or strange dogs and cats. Very well behaved and keeps us safe. Tracey is a mix of lab & golden retriever we think. She is very good with kids, extremely friendly and careful around little ones. Hope this helps!