The Basenji dog is the only dog that is not able to bark.
4
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
11
One in three dog owners say they have talked to their pets on the phone.
427
Dogs sometimes fake being sick to get attention.
26
Cats and dogs can hear ultrasound.
350