My son doesn't seem to play like other babies his age. Every toy is straight in his mouth, he'll take things out of other things but won't put them back in, he likes turning pages on books but does it too quick for me to really read the words, he'll knock blocks down but won't stack them, doesn't really use toys for intended purpose just mouths them, mainly just wants to furniture surf.
Other people's babies seem to play, put things in and out of baskets/boxes, use toys how they are intended, bang things together, find hidden objects. He does none of that really.