It's a brussels griffon. Source; I have one, his name is whiskey. Unfortunately, due to the military, I'm seperated from him and my other doggo. Link to exact picture in thing; google com/search?q=brussel+griffon+with+boot+lip&client=ms-android-verizon&biw=360&bih=559&prmd=isvn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwij8oKBqsnLAhVH-mMKHVOxA78Q_AUIBigB#imgrc=SjEXyZa4-5Ax0M%3A
I have one and she hates everything