Dragnix.Net

I've been thinking about this for a while, and I think it would be a cool discussion.
Assuming dragons existed (big assumption, but just for the sake of argument), around which time period do you think they left/went extinct/disappeared?
This came to mind because there are the dragon-like creatures in ancient mythologies around the world, but also there are the medieval stories. Could the dragons have survived until medieval times? Or even until today? (that bird-thing someone spotted in alaska with apparently a 15-ft wingspan. I'll see if I can find an article about it).

EDIT: okay I couldn't find a story about that particular sighting, but something similar in Pennsylvania - with what the people called birds. Read the 1st 2 articles.
http://www.s8int.com/eyewit27.html

I would place their general disappearance circa 1300 AD, with some persistant sightings until today.

I would agree with that date, but no later than that and possibly earlier. Sometime after Arthurs suggested lifetime.

16/17th centuy, based on the book Sepentum et Draconum Historie Libri Duo, which came out around 1640.

i think when the medivel knights hunted them in 1500-1700ad