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!

These tiny piglets were born and raised at Pennywell Farm in Buckfastleigh, England. Micro or miniature pigs grow to just 14 inches long, and weigh only 9 ounces when they are born. At two years old, they are fully grown and weigh between 40-65 pounds and are around knee height at 12-16 inches tall. Micro pigs can live for up to 18 years, and make popular pets as they are low maintenance, quiet and surprisingly clean. (Photo by Richard Austin/AP Photo/Rex Features)

A belly dancer dances on the bar at Georgian restaurant Nanuchka in Tel Aviv, Israel July 15, 2015. Nana Shrier, owner of Nanuchka, shocked Israel's culinary world when she removed all animal-based products from the menu. Nanuchka is part of a growing trend that has transformed Israel's financial center into a haven for meatless cuisine. (Photo by Baz Ratner/Reuters)

In this Saturday, March 3, 2018, photo, a contestant gets ready to throw a hatchet at a wooden bull's-eye at the Kick Axe Throwing venue in the Brooklyn borough of New York. Kick Axe Throwing is the first bar in New York City to pick up on a nationwide trend of ax throwing, a growing sport that some enthusiasts hope will take off the way bowling did in the last century. (Photo by Mary Altaffer/AP Photo)

New Zealand photographer Niki Boon captured her children, who are growing up with limited electronics, in the photo series “Childhood in the Raw Photos”. Niki Boon began taking photos as a hobby while she was working as a physiotherapist in Scotland. However, the New Zealand native found her interest in the art waning while she travelled, and it wasn’t until she had returned home and started raising a family that her passion was rekindled. “Childhood in the Raw”, an ongoing photo series of her four children’s technology-free life on her 10-acre property in New Zealand, is the perennial fruit of this passion. (Photo by Niki Boon)

A dead red-tailed monkey hangs by its tail above the ground, in order to keep it away from ants, in the forest near the city of Mbandaka, Democratic Republic of the Congo, April 5, 2019. Bushmeat hunters are emptying Central Africa's forests at a high rate, researchers say. A growing appetite for wild meat in cities has ramped up the scale of hunting. Research shows around 6 million tonnes of bushmeat are sourced annually from the Congo Basin, whose forest spans across six countries and is second in size only to the Amazon. (Photo by Thomas Nicolon/Reuters)

Looking for love by Tony Wu, USA. Highly commended, Animal Portraits. “Accentuating his mature appearance with pastel colours, protruding lips and an outstanding pink forehead, this Asian sheepshead wrasse sets out to impress females and see off rivals, which he will head-butt and bite, near Japan’s remote Sado Island. Individuals start out as females, and when they reach a certain age and size – up to a metre (more than 3 feet) long – can transform into males. Long-lived and slow-growing, the species is intrinsically vulnerable to overfishing”. (Photo by Tony Wu/2018 Wildlife Photographer of the Year)

Children watch a rabbit, jumping over a hurdle at an obstacle course the 5th Open Rabbit Sport Tournament (5. offene Kaninchensport Turnier) on August 28, 2011 in Rommerz near Fulda, Germany. Eighty rabbits competed in light-weight, middle-weight and jumping-for-points categories at today's tournament in Rommerz that is based on Kanin Hop, or Rabbit Hopping. Rabbit Hopping is a growing trend among pet rabbit owners in Central Europe and the first European Championships are scheduled to be held later this year in Switzerland. (Photo by Ralph Orlowski/Getty Images)