The crew of a Delta Airlines flight from Baltimore to Atlanta decided that everyone had to switch to a new plane when they learned that a baboon tarantula was loose on board. The tarantula had somehow escaped from its cargo shipment container.
The tarantula was later found. It had never made its way into the passenger compartment. But still, a good decision to switch planes. I can imagine passengers would have freaked out if they had been surprised by a baboon tarantula crawling down the aisle. [11alive.com]
Check out the video below to see a baboon tarantula in action.