How old are babies usually when they laugh freely? My dd laughs sometimes, but I wouldn't even say it's once every other day. I never know what's going to get her laughing though, and she tires of it quickly. She's not too ticklish either, which I thought all babies were. I also thought that babies around her age smile all the time. But she's conservative with her smiling too. I don't think anything's wrong with her behaviorally, but it's hard to know if I'm making her happy. We had our 8month old nephew stay with us (with his mom of course) for two days. And he is all smiles and laughs and giggles. And he's been that way for a while. I kept expecting Rachel to develop this, but so far she hasn't. What does that mean for her temperment? Also, I have noticed her getting fussy or whiny more when she's playing. Like if she can't reach a toy or even sometimes when she's playing with something. What do you think that means?