A dog wears a Holloween's costume during a dog festival in Richardson, a suburban city of Dallas, Texas, the United States, Oct. 19, 2019. The dog festival held in Richardson on Saturday attracted lots of local citizens to dress their dogs up to attend the dog costume contest. (Photo by Tian Dan/Xinhua)

A dog sits on a boy's shoulder during a dog festival in Richardson, a suburban city of Dallas, Texas, the United States, Oct. 19, 2019. The dog festival held in Richardson on Saturday attracted lots of local citizens to dress their dogs up to attend the dog costume contest. (Photo by Tian Dan/Xinhua)