For some reason holding a venom gland over any living creature gives you the option to eat the venom gland.
It doesn't do this when you hold the venom gland over yourself though.
Steps to Reproduce
1. Click any monster/animal with a venom gland in hand
1. Click any monster/animal with a venom gland in hand
A developer has marked this issue as fixed. This means that the issue has been addressed in the current development build and will likely be in the next update.