It's late, I'm tired,so if these have been asked before I apologize...
In Fear of a Bot Planet, the robot mayor says they have had 146000 + straight Human Hunts without finding any humans... If they are holding one every day at 5 pm. that would be something like 3000 years!? What, they used to hold more then one a day??
In a Fishful of Dollars Zoidberg breaks down and admits his people ate all the anchovies; they way he talks it sounds like he umm,helped some in making them extinct. The anchovies went extinct back in the 2200s though... I know there were some around after that but I don't see how Zoidberg could afford them. Is he like 800 years old then??