My lo is 8mo and has just figured out that there is a purpose to crawling. We have two cats and they are used to having the run of the house. The will come and lay in the middle of the living room or even on Brendan's toys. Lately Brendan has begun to crawl towards them. One of my kitties does the same thing your's does, he will get up and move a food away and then lay back down. My other kitty is naturally skittish and he will run for higher ground since Brendan can't climb yet. It is cute but I am afraid they are going to scratch him when he pulls their hair. I know it hurts because he pulls my hair. Kitties are silly.
Kimberly