Welcome Alex! Bailey is one cute pup
She looks like a Pit Bull type dog, possibly Pit Bull/American Bulldog mix, but there is no way of telling. As she matures and gets to about 1.5, you may be able to tell a lil more by her size and such...but, as someone else stated, it's impossible to really know without papers. It's all just a guessing game. I hope you enjoy it here, and I look forward to seeing pics of Bailey as she blossoms.