New research shows that having a pet dog can help to reduce children's stress. A study about at between by for from in of over to with without the Centers for Disease Control and Prevention about at between by for from in of over to with without the USA shows that petting a dog is a great way to help stressed kids. Researchers looked about at between by for from in of over to with without 643 children aged six and seven about at between by for from in of over to with without an 18-month period. They found that children who have a pet dog suffer about at between by for from in of over to with without less stress than children about at between by for from in of over to with without a dog. The researchers said that just twelve per cent about at between by for from in of over to with without children about at between by for from in of over to with without pets showed signs of stress. This compares with 21 per cent of children with no dog. The research will come as no surprise to the parents about at between by for from in of over to with without children who have a dog. They have always known that a dog is great about at between by for from in of over to with without helping a child's development and mental health. A researcher said there are many things about at between by for from in of over to with without the research that she is still unclear about. She said she did not know if less anxious children have pet dogs, or if it is the other way round and pet dogs make children less anxious. She said the research just showed a link about at between by for from in of over to with without pet dogs and children's stress. She said pet dogs help children start conversations. This can often be difficult about at between by for from in of over to with without children to do and can cause them stress. The researchers also said a pet dog can be a source about at between by for from in of over to with without comfort for children. The dog can also act as a friend about at between by for from in of over to with without a small child, who tells the pet all his or her secrets and stories. Sometimes the dog is so important that its name can be the first word the child speaks.