Alyssa's trying to Crawl!

For the last 3 days, Alyssa is pushing her bum in the air, trying to get on all fours, and is scooching along. I left her on her hitting toy, to get Cooper some food, and came back and she was 2 feet off of the toy! Shes going to be crawling soon!! (Scary!) Hopefully she is good like Cooper was, and we don't have to child proof!