He should have double checked the documentation that was needed for his staff. That was his responsibility toward them, to ensure their safe exit. They relied on him, big chief motormouth, to guide them and direct them so that all the 'i' s were dotted and 'T's crossed. He neglected them to focus on the animals, simple as that. Not the officials fault, his. He knew this was coming and dropped the ball.
You can bet he had documentation for the animals, all the boxes ticked nicely and paperwork perfect or they'd never have passed muster for a flight.

Shame on him not doing the same for the humans who depended on him.