If you take your dog to a dog park, you need to read this article. If you take your dog to a doggie daycare, you need to read this article and make sure that those supervising your dog when it plays are aware of and understand ‘predatory drift.’
Predatory drift is when play becomes predatory behavior and possibly very dangerous. For more information on predatory drift, read this article by Gail Fisher in the New Hampshire Union Leader. Gail is a Certified Dog Behavior Consultant, author, and a pioneer in doggie daycare. She runs All Dogs Gym & Inn in Manchester, NH.