Holly,
#1 is my fave of the 3 because I feel I'm more at the dog's level where as the other two seem like you were shooting down on her

tongue trick, put a drop of lemon juice on an assistants finger and have them tap the tongue as you are ready to take the pic, the mouth closes for a good 10 seconds, long enough for a couple of shots LOL

watch your busy backgrounds, they're competing with the subject for the viewers attention

great job on exposure, maybe try a tighter crop, more 8x10 or square orientation, you don't need to show all the way down to the feet if you don't want to

ouch 90degrees yuck!! agree ... very early in the morning would be better for you