Dolphins

A philanthropist decides to donate his prize dolphins to the local zoo. Upon making his donation, he reveals that the dolphins can be kept alive indefinitely by feeding them live myna birds. The zoo, not happy with the prospect of depleting their myna bird collection, decides to send an expedition to Africa to pick up some of the birds.

The bird seekers land their helicopter in a large clearing in the middle of the jungle, and go off to seek their prey. They search all the trees, the myna bird bars, the bird baths; in short, all the places myna birds hang out. When they get back to the clearing, they discover that a pride of lions has taken up residence there. As the lions all appear very sleepy, they decide to tiptoe their way back to the safety of their helicopter. But, alas, when they get back to the helicopter, the game warden pops out and writes them a citation for

"Transporting mynas over sedate lions for immortal porpoises."