It’s pretty obvious that dogs sense a lot of things that humans can’t. But can they sense when their human’s are pregnant? I believe so. Dunder, my German Shepherd, would always jump on my wife as soon as she got home from work, but shortly after becoming pregnant that stopped. Now he will greet her in a very gentle way.
My little dog, Munster, has always been affectionate, but recently I’ve noticed him cuddling in a different way. He will now go up to my wife and put his ear against her belly, almost as if he is listening to the baby. See for yourself.