A research group was engaged in a study of longevity in mammals and had recently focused their attention on a particular species of porpoise, which they studied from their floating laboratory off the coast of Baja Mexico. They came to believe that, if fed just the right combination of nutrients, this particular porpoise could, in theory, live forever.
To put this to the test, they studied the world's flora and fauna to see if any naturally occurring organism would fit the bill. They finally narrowed the selection down to an unusual species of mynah bird, and they sent a team of researchers off to gather a specimen.
It turns out that the mynah bird in question was quite rare, living only in a single tree in Kenya. The research team finally arrived at the tree to capture a bird, only to find that the tree was surrounded by a pride of very hungry lions, precluding any reasonable attempt to approach and climb the tree.
A suggestion was made that the lions might be manageable if they could be fed, and a couple of fat cape buffalo were captured and offered to the lions. The hungry lions devoured the hapless beasts and lay down upon the grass to digest their meal.
One of the researchers then gingerly tiptoed past the lions, climbed the tree, and had little difficulty capturing one of the mynah birds. He climbed back down the tree and walked past the lions to rejoin the group when a game warden appeared and arrested him for (what else)...
"Transporting mynahs across sated lions for immortal porpoises."