17" Chain with 2" Extender & Pendant (.6" x.6") Studies suggest that domestication happened around 27,000 40,000 years ago. By then, no other animal lived and interacted with humans. It all started when wolves started showing up in human homes to look for scraps of food. In return, they would help humans with hunting. Over the next millennia, the wolf had changed into the present dog as we know it Seventy percent of people sign their dogs name on their holiday cards They may not look like us but our dogs are similar to us than we care to admit. They are social beings, consider us as family members, crave attention, have the emotions we have, just to mention a few. These things explain why the two species form an intense and inseparable bond One of the reasons canines make amazing pets is because they are good at reading human emotions. They combine their senses of sight and hearing to interpret what their owners are going through. According to the AKC, these beautiful canines can read six different emotions anger, sadness, surprise, fear, happiness, and disgust