1-Gazing into your eyes
One of the most important ways in which pet dogs say “I love you” is by staring directly into your eyes. Scientists have acknowledged that by gazing into our eyes dogs develop strong emotional bonds with humans, a bit like people do when looking into each other’s eyes. It is possible that dogs acquired this pattern of human-like communication during domestication, resulting in an increased level of oxytocin (the social hormone) in both dogs and their owners. Increased level of oxytocin (the social hormone) in pet dogs and their owners.