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
In the movie 'The Wizard Of Oz', Toto the dog's salary was $125 a week, while Judy Garland’s was $500 a week.
5
Dogs can make about 100 different facial expressions.
18
Cats and dogs can hear ultrasound.
350