Skink Bitten by Snake?

Me and a friend, Marc Littlewood, heard a noise in the leaf litter as we were walking around, and found this skink in obvious distress. Not sure what happened to it, but it appears to have been bitten or stung by something venomous.

It’s twitching around uncontrollably.

We couldn’t guess what stung it. Spider? Scorpion? Centipede? Snake? Wasp? Too many possibilities really!