Harlequin Snakes are described as only mildly venomous, and I have never heard of any serious bites or effects from this species. So it didn’t really cross my mind that I might soon be making a contribution to our knowledge of the venom of this species, when I reached out to pick it up. It was about 25 cm in length (probably a sub-adult; 30-40 is typical for an adult; max length 65 cm). True to form, the snake was very docile while I got some pictures of it. It made some rapid, jerky movements and tried to slither away speedily, but it did pose well for a minute or two. I then picked it up to release it back under its rock, and noticed a very slight stinging sensation on my hand. Looking down, I discovered this little guy chewing away at the soft flesh between my left thumb and forefinger. It seemed to be having some trouble latching on, given its small head and narrow gape, and it briefly released me and then went in for another sort of slow-motion strike. I did not want to yank the snake off, in fear of hurting it, so I just let it chew away. I figured that the venom would not affect me to any great extent, and that at least the snake would get some closure. It released, and I released it, and it returned to its rupicolous refuge. But this is where the story gets a little more interesting.