One cat's hysterical reaction to finding out she's pregnant is making people laugh worldwide. The side-by-side images show an adorable cat looking over her shoulder at a sonogram, then looking back to the camera with a face of utter shock. The picture, captioned "When you find out you're pregnant," was shared to Reddit this week. It was quickly up-voted more than 90,000 times. The cat in the picture, Ulla, is a 1-year-old tabby who was turned in to Dyrenes Venner, a shelter in Greenland, after she was found on the street. "We took this cat in a few weeks ago, but only recently noticed the bulge in her stomach area getting bigger and bigger. Turns out she's pregnant!" the shelter commented on the image.Shelter board member Tone Frank told TODAY that staff members decided to have her scanned after noticing she was a "little chubby." The result? Surprise -- kittens! Frank said Ulla is expecting four or five. She is expected to give birth within a few weeks and has been adopted.