What do dogs dream about?

Sometimes I sit there and watch my dogs sleep. They're funny little dogs that like sleeping on their backs.

They look so peaceful, and calm... and then the twitching starts. It usually starts with their whiskers. Then it moves on to the upper lip, as though they are trying to look vicious, baring their itty bitty teeth.

The next thing you know, hind legs start kicking, and front paws flap, and then something along a high pitched whine turn growl will come out and they'll wake up with a start.

I often wonder what their dreams are about. Obviously they start out pretty good, but by the end I know they must turn scary as when they wake up it takes them a few seconds to calm down.

Do they dream of running in wide open fields chasing bunnies, only to have those bunnies turn into giant semi trucks with teeth that breathe fire that chase them until they fall off a cliff... and then they wake up?

Do they dream of being a tiny puppy surrounded with sausages and hamburgers and all the food they could every eat only to have those giant sausages and burgers turn into giant semi trucks with teeth that breathe fire that chase then until they fall off a cliff... and then they wake up?

Maybe they're dreaming of spreading a fun day with me, playing ball outside in the yard... only to have ME turn into a giant semi truck with teeth that breathes fire that chases them until they fall off a cliff?

I guess I'll never know.

But I am certain of one thing: There's giant semi trucks with teeth breathing fire chasing them until they fall off a cliff.

I'd bet money on it.