See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Hearing a human voice can affect a dog more than previously thought.

Spoiler alert: Tail-wagging isn't on the list.

Add Yahoo as a preferred source to see more of our stories on Google. “Happy dogs look happy,” says Marc Bekoff, PhD, an expert animal behaviorist and professor emeritus of ecology and evolutionary ...

Add Yahoo as a preferred source to see more of our stories on Google. However, sometimes knowing what happiness looks like for your dog can be tricky, especially since dogs can’t communicate in words ...

When people are feeling happy, they’re more likely to see other people as happy. If they’re feeling down, they tend to view other people as sad. But when dealing with dogs, this well-established ...