Can an animal have a dream like humans do?

Animals don't necessarily dream like humans do, but many pet or animal owners often come to the conclusion that their pets dream. Animals may display dream-like behavior, including twitching eyelids and facial tics that often progress to animated paws or legs in motion.

"Dogs in particular DO dream. They can have a low growl, yip, their eyes will flicker and their feet may move or their tail will wag. They are either dreaming of running or possibly meeting another dog when they grow or wag their tail. My dogs do it off and on. However, I seldom see my cat dream and if she does then she shows no signs of it."