few adults hear above 16,000 Hz.

a dog will not have the more complex social emotions, like guilt, pride, and shame.

A dog reserves tail wagging for things that are alive,

As the tail position moves up, it is a sign that the dog is becoming more threatening, with a vertical tail being a clearly dominant signal meaning,

The tail’s position, specifically the height that it is held, can be viewed as a sort of emotional meter.

Dogs even have a special scent detection system called “Jacobson’s organ” or the “vomeronasal organ.” It is a sort of pancake-shaped pouch of special receptive cells located just above the roof of the mouth,

The sweet taste buds in dogs respond to a chemical called furaneol.

dogs ranked highest in obedience or working intelligence, we find that 190 of the 199 judges ranked the Border Collie in the top ten. There

the top ten dogs in terms of working and obedience intelligence are, in order: • Border Collie • Poodle • German Shepherd Dog • Golden Retriever • Doberman Pinscher • Shetland Sheepdog • Labrador Retriever • Papillon • Rottweiler