Do your pets "know"?

Lhand11

I have heard that pets will start acting differently when you are pregnant because they sense the hormonal changes. Have any of your animals been acting differently?

The only thing I have noticed is that Harvey, my 2yr old black lab/pitty mix, has been whining everytime I go to the bathroom and shut him out. I hear him trying to open the door with his nose and then whine when he can't get in to see me! Lol.