Evidence

I honestly quite not sure if the Aswang really exist or not, but I found this on the web called "myLot" are people that believe it’s real and people believe that aren't real.

"I have experience "Aswang" who made me scare when my wife was pregnant with youngest son. I saw a big bird that making sounds in the middle of the night in our house at the province. Many folk stories that "Aswang" do really exist, and I do believe on it for it is also stated in the bible that this creatures are evil spirits".

"I personally don't believe Aswang. I guess it's only a myth. When I was young, I kept on hearing stories about it and I was really scared. But until now, I haven't seen any so I guess it's not true".

"I have heard a lot of stories about Aswang, but I don’t believe that there really exist an Aswang until I see one right in front of me trying to prey on his victim. I haven't seen one for the last 40 years of my life."

“Aswang are mythical creatures from the Filipino culture. They are not real”.

“There's really no proof that Aswang exists. But then again, I'm not from Capiz nor did I ever have experiences with such creatures if they did exist”. 

Sources:

"True." Answer.com. Web. 25 Oct 2010. < http//wiki.answer.com/Q/Are Aswangs real or hoax>.

"Not true." MyLot. Web. 25 Oct 2010. < http://www.mylot.com/w/discussions/aspx >.

“Aswang” Wikipedia. Web. 25Oct 2010. <http://en.wikipedia.org/wiki/Aaswang>.