To mark National Dog Bite Prevention Week, the U.S. Postal Service has assembled an unusual list: The top fourteen cities during fiscal 2012 when it comes to dog attacks on postal workers.

No, dogs biting mail deliverers isn't just a staple of old sitcoms. It actually happens a lot, and Denver made the roster. The entire list is below, complete with terrifying photos that should probably be rated PWG -- Postal Worker Guidance advised -- plus USPS tips about avoiding bites. Check it all out below.

Number 14: Wichita, Kansas Total attacks: 20 Number 13 (tie): Dallas, Texas, and Tacoma, Washington Total attacks: 21 Number 12: Denver, Colorado Total attacks: 23 Continue to keep counting down the top fourteen cities for dog attacks on postal workers. Number 11 (tie): Buffalo and Brooklyn, New York Total attacks: 24 Number 10 (tie): Cleveland and Dayton, Ohio Total attacks: 26 Number 9 (tie): Houston, Texas, and Minneapolis, Minnesota Total attacks: 27 Continue to keep counting down the top fourteen cities for dog attacks on postal workers. Number 8: Baltimore, Maryland, and Sacramento, California Total attacks: 29 Number 7: St. Louis, Missouri Total attacks: 32 Number 6: Detroit, Michigan Total attacks: 33 Continue to keep counting down the top fourteen cities for dog attacks on postal workers. Number 5: Philadelphia, Pennsylvania Total attacks: 34 Number 4: San Francisco, California Total attacks: 38 Number 3: Chicago, Illinois Total attacks: 41 Continue to keep counting down the top fourteen cities for dog attacks on postal workers. Number 2: San Antonio, Texas, and Seattle, Washington Total attacks: 42 Number 1: Los Angeles, California Total attacks: 69

Avoiding Attacks

• Never leave a baby or small child alone with a dog. • Don't run past a dog. The dog's natural instinct is to chase and catch you. • If a dog threatens you, don't scream. Avoid eye contact. Try to remain motionless until the dog leaves, then back away slowly until the dog is out of sight. • Never approach a strange dog, especially one that's tethered or confined. • Don't disturb a dog that is sleeping, eating or caring for puppies. • Anyone wanting to pet a dog should first obtain permission from the owner. • Always let a dog see and sniff you before petting the animal. • If you believe a dog is about to attack you, try to place something between yourself and the dog, such as a backpack or a bicycle. • If you are knocked down by a dog, curl into a ball and protect your face with your hands.

More from our Lists & Weirdness archive: "Photos: Ten favorite dog names in Colorado and more."

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