Travelling without moving

For a little guy that's not officially crawling, Quinn gets around. It started about a month ago with what we referred to as "Hands" / "Pushup". The "Hands" part is where he lays on his belly and gets all four appendages in the air while waving his hands. The "Pushup" part is just as it sounds - he pushes himself up with his hands. The Pushup generally leads to him sliding backwards a little. I don't think he has put together that he can move with this mechanism, but I think he understands that when he does "Hands" / "Pushup" (usually with our verbal encouragement) he generally ends up with something new to look at.

He can now navigate clear across a room by rolling over. He can even retrieve a toy that's gotten away by rolling and incorporating half-twists as required. He can get up on all fours occasionally - especially in his crib - and he pushes himself backwards a little bit. He's so mobile in his crib I swear he needs a queen-sized one. Originally he was quite keen to chase the cats but he seems to have lost interest in them, choosing instead to eye the toy basket in the living room and the toy drawer in his room. He already has a strong tendency to get into things he shouldn't. It won't be long before we'll be asking ourselves why we were so keen for him to learn to crawl.