A dog attends the Pet Gala fashion show at AKC Museum of The Dog, Monday, May 20, 2024, in New York. (Photo by Charles Sykes/Invision/AP Photo)

Daniel Cheong, a dog behaviorist and trainer, steps over a leash as he walks a pack of dogs in Arlington, Va. on November 13, 2018. (Photo by Ricky Carioti/The Washington Post)

Disappointed Cat aka Foo-Chan is a three-year-old Chinchilla Golden has a heavy-set brow, causing him to appear depressed; his gloomy disposition has gone viral on a Japanese forum, where he's been praised as "cute, but troubled" or "worried all the time".

These adorable rat portraits were taken by a committed photographer who’s made it her mission to remove the stigma attached to the creatures. Diane Ozdamar’s vibrant images feature rodents cutely cuddling flowers, eating fruit, playing with bubbles, and lovingly interacting with each other. The 32-year-old photographer, who lives in Montreal, Canada, shot her «Fancy Rats» series over a number of years. (Photo by Diane Ozdamar/Caters News)

Owners and their dogs take part in “HK Doggie Dash 2018”, an event held to raise money for for abandoned and surrendered dogs in Hong Kong on April 15, 2018. Dozens of pugs and dachshunds compensated for their modest speed with peppy spirits at Hong Kong’s inaugural “doggie dash” on April 15 that raised funds and awareness for the city’s abandoned and rescued dogs. (Photo by Isaac Lawrence/AFP Photo)

Adorable creations of Canadian illustrator Hyemi Jeong, based in Toronto, who is having fun with the small everyday objects with cute and creative illustrations.

Jenny Parks is a scientific illustrator that also happens to be a shameless nerd, with a penchant for drawing animals, dinosaurs, imaginary creatures… and occasionally, people as cats. Somehow, she found herself with a bit of internet fame with the illustration ‘Doctor Mew’, and has been baffled ever since. With a BFA in illustration from the California College of the Arts, and a graduate degree in Science Illustration from UC Santa Cruz, she now resides in San Francisco as a freelance illustrator, fulfilling her destiny to make a living drawing cute, fuzzy things.

With more than 40,000 followers on Twitter and 26,400 fans on Vine, it looks like Marutaro the hedgehog from Japan is one of the most popular hedgehogs on the Internet. And as his owner keeps on posting Marutaro’s pictures online daily, Marutaro’s popularity continues to grow. There are hundreds of cute photographs and videos of this little fellow, but the ones with little paper cut-out faces are probably the cutest. As Marutaro lies on his back, his owner gives him a variety of silly expressions and smiles. The 20 best of them will definitely boost your mood!