A World by the Tale by Randall Garrett, Science Fiction, Adventure

Professor John Hamish McLeod, Ph.D., Sc.D., went halfway across the galaxy to see after a zoo of earthly wildlife the aliens bought from us. And when he came home, life went to heck. Literally! He wrote a book describing the experience. He had to! The government had confiscated what the aleins had paid him. The book, of course, had become a bestseller here at home. But the aliens thought it was funny! And then the sales had really begun to pay -- and they paid seriously well . . . But the government felt it was due all the money, of course.