Mackenzie never crawled. She rolled from one spot to another if she wanted something. She hated tummy time and would vomit if I put her on her tummy. She would have walked on her own at around 10 months if she just let go of our fingers but as soon as we pulled it away she would fall down on the ground. She walked at 13 months and the first step she took on her own was around 6pm one night. The next day she walked all day and never rolled again. You would have thought she had walked all her life. She was a champ. I have heard from nurses etc that babies that don't crawl can have probs later with spelling etc and co-ordination (as everyone else has said). I think at 3 Mackenzie is quite bright and hasn't missed a beat in picking anything up. I also did a lot of playing 'cats and dogs' with her when she was able to walk to get the co-ordination thing going. Interesting she never climbed and I stongly believe Gymbaroo helped her to learn to climb. We still go to Gymbaroo and she would have to be the one who climbs the equipment the most out of her group and we have around 12 kids in her group who are all around the same age. I wouldn't be concerned but just be aware if she dosn't crawl , once she is walking play games under the table etc which will help her to move her arms and legs in the crawling motion, as this will help with her co-ordination. Just my opinion but have to add that everyone else was more concerned about Mackenzie not crawling then I was.