Cats and dogs can hear ultrasound.
350
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 make about 100 different facial expressions.
18
A puppy is born blind, deaf, and toothless.
16
Dogs sometimes fake being sick to get attention.
26
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10