According to a new study published in the journal Current Biology, Professor Takefumi Kikusui has found that dogs cry happy tears of joy when their owners come home.
A recent study found that many dogs also shed happy "tears of joy," much like people, when their favorite humans return from work. Dogs frequently hop around excitedly when this happens.
Six years ago, when the poodle belonging to Professor Takefumi Kikusui gave birth to puppies, the dog's expression changed as it br...
