"We got some really compelling audio," he said."It is not a known species, I can tell you that. One of the details (convinces us) there is nothing else it could have been."Their discovery comes as scientists from Oxford University and Lausanne Museum of Zoology are preparing to use new DNA analysis techniques to determine whether creatures such as yowies, Bigfoot, sasquatches or yetis exist.The European scientists have asked other scientists, museum curators and Bigfoot tracking groups to share samples thought to be from the mythical ape-like creature.Bryan Sykes, of Oxford University, told the Associated Press the research group had already received offers of samples to test, including blood, hair and items supposedly chewed by Bigfoot.Fay is still "stoked" with having captured the Australian yowie sound on tape."When at first we all heard it, we were like, 'No way'," he recalls."If you were in North America, you could have written off one of the compelling things we heard as being a large bear. But there are no large bears here."