Alleged Human Mutilations by Aliens

Many of us are aware of alleged cattle/animal mutilations by aliens, but there are other, rarer, more terrifying instances reported that involve aliens mutilating humans.
Link to History Channel article about the 1956 Lovette mutilation case: https://www.history.com/news/ufos-aliens-animal-human-mutilation-lovette-cunningham
Link to website with information about the 1988 alleged mutilation case in Brazil (Note: There are gruesome images in this article that may be disturbing): http://www.newsnfo.co.uk/pages/Informant%20News%20-%20Content.htm