Paidan - "Two caravans and a few independent hunters, as far as we know. And my advice is to only go for the head to get them out of the way if you're being overwhelmed. The killing strikes would be aimed towards the vital organs"
Paidan - "Hard to say. A lot of the old stories about hydras are referring to bog hydras; they will grow back heads if you let them. Fire's not quite as effective as the stories make it out to be but it will definitely slow down any regeneration. They're venomous, so watch out for that, and if they're hiding within a bog itself they're almost impossible to spot."