What Do Dogs Dream About?

iStock
iStock

One of the great pleasures of having a canine companion is watching them fall into an exhausted pile of fur after a long day of doing absolutely nothing. It’s at this point that many pet owners wonder: What do dogs dream about, if they dream at all?

First, researchers believe that yes, dogs do dream. There’s no actual testimony, but we know from a 2001 MIT study with rats that the animals can enter REM sleep and exhibit the same brain activity as they did while they were navigating a maze earlier. Other studies using electroencephalogram (EEG) devices have been able to observe similar activity in dog brains while slumbering. Like humans, dogs have a sleep stage where their breathing slows and their eye movements become rapid—all indicators that dreaming could occur.

There’s also the superficial evidence: Dogs often bark or twitch while asleep in ways that imply they’re dreaming of chasing an elusive target. (Or leaf.)

That’s because dogs, like us, probably dream about the events of the day—in their case, running, jumping, or playing. Dreams can even be breed-specific, as in the case of Pointers that go “on point” as though they were spotting game. Smaller dogs also tend to dream more than larger dogs, and older dogs more than midlife dogs.

Details of those dreams remain elusive. Apart from physical clues, it’s hard to know exactly what goes through an animal’s mind. Some gorillas who have been taught sign language have communicated their dreams to their handlers—sometimes about people they’ve seen recently. It’s also possible dogs dream about their owners frequently, since the canine/human bond is so strong.

If you want to observe dreaming in your own dog, experts recommend you wait until about 20 minutes after they’ve dozed off. Their muscles may begin to twitch and their eyes might start to flutter, both likely signs the dog is entering REM and starting to dream. It’s also important not to disturb them during this stage of sleep, since it can be startling to them. If you leave them be, maybe they’ll finally have an opportunity to catch whatever they’ve been chasing.

So what do dogs dream about? A lot of the time, probably the thing that’s most often on their mind: you.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

What Happened to the Physical Copy of Martin Luther King's 'I Have a Dream' Speech?

AFP, Getty Images
AFP, Getty Images

On August 28, 1963, Martin Luther King Jr. stood on the steps of the Lincoln Memorial and gave a speech for the ages, delivering the oratorical masterpiece "I Have a Dream" to nearly 250,000 people.

When he was done, King stepped away from the podium, folded his speech, and found himself standing in front of George Raveling, a former Villanova basketball player who, along with his friend Warren Wilson, had been asked to provide extra security around Dr. King while he was speaking. "We were both tall, gangly guys," Raveling told TIME in 2003. "We didn't know what we were doing but we certainly made for a good appearance."

Moved by the speech, Raveling saw the folded papers in King’s hands and asked if he could have them. King gave the young volunteer the speech without hesitation, and that was that.

“At no time do I remember thinking, ‘Wow, we got this historic document,’” Raveling told Sports Illustrated in 2015. Not realizing he was holding what would become an important piece of history in his hands, Raveling went home and stuck the three sheets of paper into a Harry Truman biography for safekeeping. They sat there for nearly two decades while Raveling developed an impressive career coaching NCAA men’s basketball.

In 1984, he had recently taken over as the head coach at the University of Iowa and was chatting with Bob Denney of the Cedar Rapids Gazette when Denney brought up the March on Washington. That's when Raveling dropped the bomb: “You know, I’ve got a copy of that speech," he said, and dug it out of the Truman book. After writing an article about Raveling's connection, the reporter had the speech professionally framed for the coach.

Though he displayed the framed speech in his house for a few years, Raveling began to realize the value of the piece and moved it to a bank vault in Los Angeles. Though he has received offers for King’s speech—one collector wanted to purchase the speech for $3 million in 2014—Raveling has turned them all down. He has been in talks with various museums and universities and hopes to put the speech on display in the future, but for now, he cherishes having it in his possession.

“That to me is something I’ll always be able to look back and say I was there,” Raveling said in the original Cedar Rapids Gazette article. “And not only out there in that arena of people, but to be within touching distance of him. That’s like when you’re 80 or 90 years old you can look back and say ‘I was in touching distance of Abraham Lincoln when he made the Gettysburg Address.’"

“I have no idea why I even asked him for the speech,” Raveling, now CEO of Coaching for Success, has said. “But I’m sure glad that I did.”

What is a Polar Vortex?

Edward Stojakovic, Flickr // CC BY 2.0
Edward Stojakovic, Flickr // CC BY 2.0

If you’ve turned on the news or stepped outside lately, you're familiar with the record-breaking cold that is blanketing a lot of North America. According to The Washington Post, a mass of bone-chilling air over Canada—a polar vortex—split into three parts at the beginning of 2019, and one is making its way to the eastern U.S. Polar vortexes can push frigid air straight from the arctic tundra into more temperate regions. But just what is this weather phenomenon?

How does a polar vortex form?

Polar vortexes are basically arctic hurricanes or cyclones. NASA defines them as “a whirling and persistent large area of low pressure, found typically over both North and South poles.” A winter phenomenon, vortexes develop as the sun sets over the pole and temperatures cool, and occur in the middle and upper troposphere and the stratosphere (roughly, between six and 31 miles above the Earth’s surface).

Where will a polar vortex hit?

In the Northern Hemisphere, the vortexes move in a counterclockwise direction. Typically, they dip down over Canada, but according to NBC News, polar vortexes can move into the contiguous U.S. due to warm weather over Greenland or Alaska—which forces denser cold air south—or other weather patterns.

Polar vortexes aren't rare—in fact, arctic winds do sometimes dip down into the eastern U.S.—but sometimes the sheer size of the area affected is much greater than normal.

How cold is a polar vortex?

So cold that frozen sharks have been known to wash up on Cape Cod beaches. So cold that animal keepers at the Calgary Zoo in Alberta, Canada once decided to bring its group of king penguins indoors for warmth (the species lives on islands north of Antarctica and the birds aren't used to extreme cold.) Even parts of Alabama and other regions in the Deep South have seen single-digit temperatures and wind chills below zero.

But thankfully, this type of arctic freeze doesn't stick around forever: Temperatures will gradually warm up.

SECTIONS

arrow
LIVE SMARTER