Yes. Having 3 kids I can tell you babies develop their skills at their own pace. They may even do something once or twice and then go a long while without doing it again. If you are concerned ask your pediatrician. Best advice I was given was ask lots of questions to the doctor. Even if it seems like a silly question or something that would be thought of as not a big deal because you just never know. My youngest will be 1 in a few days and I'm still learning new things and seeing different with each of my kids.