AZUZ: A University of Colorado professor says some dogs love a good squeeze. A professional dog trainer says maybe dogs just don't like being snuggled and photograph at the same time. The point, not everybody agrees with the University of British Columbia professor who says dogs hate hugs.
JEANNE MOOS, CNN NATIONAL CORRESPONDENT: There's nothing like a doggy hug to tug at your heart. But is it mutual?Let's ask the owner of Special Agent Maxwell Smart.
Do you think he does love it when you hug him?
UNIDENTIFIED FEMALE: I know he does.
MOOS: Good thing Maxwell isn't smart enough to read "psychology today." The data says, don't hug the dog.
Supposedly dogs hate it when we hug them.
UNIDENTIFIED FEMALE: Really? Not this one. He's a lover, not a fighter.
MOOS: But according to a new study, almost 82 percent of dogs show at least one sign of stress while being hugged. Some of the signs, ears down, and head turned to avoid eye contact.
UNIDENTIFIED FEMALE: Can I hug you, sweetheart? Can I hug you, sweetheart?
MOOS: Submissive eye-closing, lip-licking, anxious yawning. When psychology professor and dog author, Stanley Coren, looked at 250 photos from the Internet of people hugging their dogs, four out of five of the dogs showed stress.
STANLEY COREN, PROFESSOR, UNIVERSITY OF BRITISH COLUMBIA: The internet is filled with pictures of happy owners hugging stressed dogs.
MOOS: Professor Coren says dogs evolve so that their main means of defense is to run away. What does a hug do? Immobilize him.So if you hug him, what does he do?
UNIDENTIFIED FEMALE: He runs to me.
MOOS: Professor Coren compares hugging a dog to what one of his aunts used to do.
COREN: She came over and grabbed both of my cheeks and said, oh, you're so cute. Well, it hurt and I didn't like it at all.
MOOS: But dog owners aren't buying it.Does your dog like to be hugged?
UNIDENTIFIED MALE: He does, yes. He likes to kiss as well.
UNIDENTIFIED FEMALE: When I hug him, he leans into me and seems to be very happy.
MOOS: Maybe they're just part of the approximately 8 percent of dogs found to be comfortable getting hugged.
UNIDENTIFIED MALE: He says that's a full of baloney.
MOOS: But even Max would probably prefer baloney to a hug.Jeanne Moos, CNN.
UNIDENTIFIED FEMALE: Look, he's loving it. He's loving it.
MOOS Yes, but I haven't immobilized him.New York.
AZUZ: Hard to believe that even in a doggy dog world, our best friends were thinking, how canine get out of this? There are times they seem hug-ry for affection, not wanting to wag war against someone who unleashes it. It's not a bark or a bite, it's a hug. And unless the stress causes unrest, it paints a pretty picture of puppy love.
I'm Carl Azuz for CNN STUDENT NEWS.