This cat with a very displeased muzzle is called Shamo. For more than a year she has been living in an animal shelter in Tokyo (Japan) and most likely she is very unhappy with the fact that she still does not have a master.
In order to be able to take Shamo into the family, the orphanage workers created her own tweet page for her, where her photos are uploaded. Recently on this account came across large entertainment sites and photos of Shamo flew around the world.
Those who first see her photo, think that this is a photoshop, but no, Shamo really all the time looks displeased. Because of the features of the muzzle, it seems that she is frowning and very angry.