Lennon asked engineer Geoff Emerick to arrange the animal noises heard at beginning ( and end ) of the song so that each animal heard was one capable of devouring ( or frightening ) the animal preceding it .
Lennon asked engineer Geoff Emerick to arrange the animal noises heard at beginning as well as the end of the song so that the animal heard was one capable of devouring or frightening the animal that came before it .