I have 2 cats and my parents were worried sick about how they would act around a baby but I knew they would be fine. I was right. When we brought baby home we sat him in his bouncer and they walked up to him and gave him a quick sniff and that was it. They don't try to sleep in his crib or bassinet. They just ignore him for the most part although one of my cats, Cam, gets upset when the baby is upset and will meow in concern which is cute.
Jayson is just getting to the age where he's starting to get curious about them and will watch them walking around but he hasn't really tried to pet them yet.