“Pet micro pig turns out to be just a regular pig” is my favourite genre of news story.
I saw one once where a woman had bought a micro pig, found out it was just a normal sized (ie massive) farm pig, then bought another one and was claiming to be surprised that it also turned out to be a normal pig. Like come on, after the first one you knew the second one was going to be just a pig, just admit that you just wanted another full sized pig!