Maria Caliban wrote...
Are you suggesting it's unrealistic for a pre-modern people to have a belief based in ignorance?
They don't see any griffons. They don't know of anyone who's seen griffons. There used to be lots of them, but now they're gone. Ergo, griffons don't exist anymore.
As mentioned in the edit i did to the post, it seems the idea wasn't actually popular in our own world until quite recently.
So yes, i'm suggesting that it's quite easier to presume that there's griffons and dragons in the parts of the world outside of the little area one can gather info from, than come up with concept the species has completely disappeared worldwide when the possible cause for this extinction (human hunters) aren't even capable of travelling throughout that whole world. As in, there's difference between "extinct" and "not seen in our village/country for a while".
It's also easier to find explanation based on something already known, than come up with entirely new concept. The griffons are gone? So do birds, when they move to warmer parts of the world in the winter. So do other animals who hide and spend harsh times asleep. Why wouldn't people just presume that maybe griffons and/or dragons are just hibernating for a (longer) while elsewhere, like these other species? Or have migrated to elsewhere, where there isn't humans poking them with sharp sticks?