We have a stair climber now. She's not nearly as cautious as her brother was though. With Hayden, I never had to feel overly nervous because he was so cautious. Not the case with this little one. She doesn't seem to have much concern for gravity. It makes for some rapid heartbeats sometimes. She'll stand right up, hands-free on a stair and then suddenly just FALL. Needless to say, we're right behind her all the time.