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. The final sound effect of a chicken clucking was so placed that it transforms into the guitar on the following track, "Sgt. Pepper's Lonely Hearts Club Band (Reprise)". These animal noises were inspired by the coda of "Caroline, No" that ended The Beach Boys' Pet Sounds album, one of the main inspirations for this whole album. They begin with the crow of a rooster, while the other animal sounds heard at the end of the song include birds, a cat, a dog, a cow, a horse, a sheep, a lion, an elephant, and a group of bloodhounds accompanying fox hunters on horseback with horns blasting.