Dogs are getting more love and attention than ever, but experts say too much of a good thing may come with hidden costs.

Every dog parent has said it at least once. “He is very friendly.” “She has grown up with kids.” “He would never hurt a child.” These words come from love and trust, not ignorance. Yet, across homes ...

You’ll notice the places you go—from parks to cafés to apartment lobbies—look different as more households add dogs. Experts link rising dog ownership to broader social changes that also help explain ...