To begin, I should explain what a thylacine is for those from other places (I’m going to assume people know what a vampire is).
The thylacine (also known as the Tasmanian Tiger) was driven to extinction by European settlers in the early 20thC. Looking a lot like a dog with stripes, it was in fact a marsupial (carrying young in a pouch) and is the largest known marsupial predator.
It also starred in a pretty good furphy. You see word got around that the thylacine was a blood drinker.
What’s funny, is the furphy’s origins are the work of just one British academic who visited Tasmania a bit before WWI. His description of its feeding habits put the blood drinking on paper, and this then circulated as fact.
Not an unusual way for science-fictions or misunderstandings to spread back then. One ‘expert’ was all it took.
At the risk of spreading another furphy, I love the theory put forward as to why he thought thylacines drank blood… It’s possible that he never actually saw a thylacine in the wild. That he got lost in the bush, was given shelter by a local man who may well have pulled his leg with tales of the vampire thylacine. Afterall, we do like tormenting visitors with strange animal stories here (drop-bears, anyone?).