This seemingly grumpy ‘naked’ cat is taking the internet by storm – all thanks to his permanent frowning expression.Xherdan (5) is a Sphynx cat that’s covered in wrinkles and looks perpetually grumpy.Despite this, his owner Sandra Filippi (45) said the pet immediately “stole her heart” when she first found him on the internet.The pair lives in Switzerland with two other Sphynx cats.Xherdan now has nearly 5 000 followers on Instagram after Sandra began posting pictures of his wrinkled skin and grumpy face.The scowling kitty even poses for photos in costumes and jewellery. “His wrinkled pink skin, as fine as a peach, his turquoise eyes, as blue as the ocean. I was in love.“He makes me, as well as other people, laugh all the time and that's the most beautiful thing there is.”Sandra says she’s incredibly proud of his uniqueness. Despite Xherdan’s grumpy exterior, he actually wants to be around his owner constantly. “He watches everything and always wants to know what we’re up to.Take a look at some of his pics here: PHOTOS: CATERS/WWW.MAGAZINEFEATURES.CO.ZA.