|Dogs cry for joy after reuniting with their owners
A saying in English says a dog is man's best friend. Dogs and humans have shared close relationships for thousands of years. Scientists believe the bond between humans and dogs is deeper than we thought. They found that dogs cry with joy when they see their owner after a period of absence. The scientists did a small study on 22 dogs. They tested the behaviour of the dogs. They looked at how the dogs reacted when they were reunited with their owners, and with other people they saw every day. The scientists said that when the dogs saw their owners, they cried.