I've noticed this since the last patch, although I've only checked the place once since, that the turtles at turtle cave don't drop any meat.
I know they made them invulnerable to biting, which is understandable because of thier hard shells and we usually pull the shells off the smaller blind version anyways, but was it intended for them to not drop anything at all?
I would have placed this in the support forum, but theres no real way to tell whether its a bug or its intended without Alec or Derek telling us.