Pup Perfectly Blending Into Rug Blows Internet's Mind: 'What Dog?'

Unlike cats, who are proven masters of hiding, dogs are not particularly subtle beasts. Whether it's because they bark at nothing or chew your front door, it's pretty tough to lose your pup around the house.

Still, one dog and his accidental carpet camouflage has the internet in stitches. A German Shorthaired Pointer delighted Facebook users with his choice of napping spot—a rug that exactly matches his fur.

Posting to Dogspotting Society Facebook group, Dexter's owner Kari Klann shared the snap of Dexter as part of the #hiddendoggochallenge.

"Dexter blends into the rug a little too good," she wrote alongside the image, and Facebook users agreed. Since being shared on June 20, the post has received almost 3,500 likes and more than 100 comments from users asking "what dog?"

"There's a dog in this picture?!?" said Amie Leigh.

"Be honest... you got that rug specifically for this purpose," commented Jennifer Ann.

"Ma'am? This is not a rug page," joked Jennifer Rodger.

YangYan Zheng got all philosophical, writing: "Dexter lies on a rug, is he made of rug or is the rug made of him, the owner screams for she does not know."

When creating its memory-foam dog bed, mattress company Casper said it conducted research on how dogs sleep to inform the project engineers. Working with an animal-behavior expert, the brand came to the conclusion that where a dog chooses to sleep is partly influenced by its nose.

Smell is the primary sense that canines use to navigate the world. Dogs have 220 million olfactory receptors in their nose, compared to 5 million in humans, and are likely to go for spots that smell like their owners or other members of their family.

They also determined that the area surrounding their chosen location is important. Their ancestors would have slept in dens, which is why dogs often opt for enclosed spaces such as under tables, when they doze.

K-9 behavior expert Jacqui Zakar told Newsweek that when given the option, dogs will choose the company of humans over their own species. The scent of their owner has positive associations for the dog, so choosing a place near their loved ones makes sense.

She points out that dogs can't regulate their body temperature in the same way humans do, so comfort is also a big factor in choosing a napping spot.

She explained: "As they don't sweat, so they will often sleep on hard floors to cool themselves, or warmer mats/beds to warm themselves."

Dexter lives with Kari Klann and her husband Jake in Michigan. She says the rug is one of 4-year-old Dexter's favorite places to snooze.

"He especially likes it when the sun is shining through the glass doors so he can sunbathe," she told Newsweek.

When he's not visiting the Land of Nod, Dexter loves to run, pheasant hunt, whine to go outside, and "sit on people's shoulders like a parrot." He also enjoys spending time with his brother Karson, a Golden Labrador.

"[Dexter] is such a good boy with the funniest personality," said Kari.

Karson also loves the rug, but unfortunately, he doesn't blend in as well as Dexter. Still, Kari and Jake make sure that "he still gets treats for his efforts."