I too think it may be dominance. He is just marking things "mine"!!
We have a male Vizsla( just turned 1) that has just started doing the same thing. It intensified when we brought a baby weim into the picture. He even peed on her for the first week or so. Poor girl. Our trainer said he is just marking out his territory and prob a little jealous.
Has your daughter started crawling or walking expanding her territory? If so I wonder if he is just saying "hey whats going on here now this kid is moving around in my space--better show her its mine"
I am going to try the spray bottle with water in it--it is so hard to catch him doing it.
If you find a solution please pm me!!! Thanks
Good Luck