Once there was a marine biologist who loved dolphins.

Once there was a marine biologist who loved dolphins. He spent
his time trying to feed and protect his beloved creatures of the sea.
One day, in a fit of inventive genius, he came up with a serum that
would make dolphins live forever!
Of course he was ecstatic. But he soon realized that in order
to mass produce this serum he would need large amounts of a certain
compound that was only found in nature in the metabolism of a rare
South American bird. Carried away by his love for dolphins, he resolved
that he would go to the zoo and steal one of these birds.
Unbeknownst to him, as he was arriving at the zoo an elderly
lion was escaping from its cage. The zookeepers were alarmed and
immediately began combing the zoo for the escaped animal, unaware
that it had simply lain down on the sidewalk and had gone to sleep.
Meanwhile, the marine biologist arrived at the zoo and procured
his bird. He was so excited by the prospect of helping his dolphins
that he stepped absentmindedly over the sleeping lion on his way
back to his car. Immediately, 1500 policemen converged on him and
arrested him for transporting a myna across a staid lion for immortal
porpoises.