As the others stated, most pitvipers are immune to their own venom. The only concern is a fang puncturing an organ. A few days ago, I heard a commotion in a cage behind me and since I was tending to some bushmasters, didn't think much of it. Later however, I noticed one of my yellow Colombian lanceheads, had a dark spot below its eye. I thought at first it was a tick, wondering "What the ???" After putting 2 and 2 together I realized, the female got excited thinking it was feeding time and tagged the male, with 1 fang landing right below the eye. Here are two pics....notice the blood spot right below the left eye.
The fang area really ballooned up and I was very concerned, but as these Bothrops are the scariest species I've ever worked with, I figured, whatever happens, HAPPENS! Fortunately by morning, the swelling COMPLETELY subsided!!! Thus far, no cloudiness of the eye or panopthalmitis has developed.
