There are live cases that this unknown object has killed and sucked away all the bloods of goat, chickens and left huge food steps. Are they Alien or religiously declared as Vampire?
Some witnesses said it looks like a kangaroo but with high intelligence. They believed that is Alien but not able to return back to their planet but left in the jungle. The encounter between witnesses and them via messages between brains rather then language.
Mainly at Latin America countries starting the 1990s. Some also explained that this could be Military weapon tested but out of control. Either it is a side effect of other result or it is the direct biological weapon. Indeed related to USA.