Well, my DD just turned 7. I've noticed the last 2-3 weeks that there's a kind of proprioceprion and I don't l know at what age it's normal. I tried to Google and it confused more. When I say proprioceprion I mean for example. She's playing on her tummy. I will roll a small ball to her. The ball will reach to her thigh. She'll grab it without looking and bring it to her mouth. Is it something that babies start to do around 6 months old?