We have two cavs, charlie and sam and one (charlie) is the boss of the other (sam) ha ha. Pups nip, this is a fact. Charlie would nip at us the odd time but it is never aggressive just play when he gets excited. I would never consider cavs aggressive however I still remember in the back of my mind they are animals and have primal instincts. We are due a baby and I would say the baby when they are able to crawl etc will think the dogs are teddys however the dogs are used to kids and will get used to the baby. Once your dogs are disciplined and know who the boss is and the kids know the same there should never be any issues. Its when the kids get over excited or pull out of the dogs or when the dogs try and dominate the kids problems arise. My sister has two cocker spanels and a 13 month old and the baby gives out to the dogs and bosses them around, they just run away ha ha!!
2 lovely cavs Sam and Charlie