On a farm in Tappen North Dakota in 2005, a farmer reported he had a cow that had been mutilated. It had strange markings on it and that even the predators wouldnt eat it. In the following months the family also reported seeing strange lights in various patterns in the sky.
The next year the families 16 year old son encountered 7 foot aliens, that had sharp bladed fingers dragging a dead pig away, the teen said that he had shot at the aliens but something grabbed him from behind and knocked him out.
When he woke up he didnt know what had happened to him but he had 5 slices in his shirt and a couple of scratches that didn't bleed. Later that year the strange lights returned and they reported to have had more livestock missing, along with other farmers in the area. Click the title for a link.