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
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Cats and dogs can hear ultrasound.
350
One in three dog owners say they have talked to their pets on the phone.
427
Dogs have been man's pet for over 14,000 years.
224