Our child thinks she's a dog!

Yes that's right...Madison thinks she's a dog!  We've noticed that she copies sounds....but for the last month and a half she's been growling....it's pretty cute (you can hear it in the video where she's laughing feeding the dog...at the end she growls).  At first I just thought it was a kid thing....a way that babies learn how to use their vocal chords...but none of my other friends have a baby that growls.   The funny thing is that Maya doesn't really growl....but she does make noises when she wants out or wants your attention...we noticed that when she did that....Madison copied her noise by growling.  Then there's the walking thing....Madison has been crawling and furniture surfing for a few months now...she can even let go and stand on her own for 10 seconds at least.....but walking???? She has no intrest!  The dog doesn't walk on two legs....why should she!  Then yesterday she and Maya were out on the deck...Grant went out to check on them only to find Madison crawling around carrying her jacket in her teeth....and Maya walking around carrying a ball in her teeth.  I'm sure Madison would have been carrying a ball instead of her jacket...but she can't get one in her mouth....believe me...she's tried!