We should be able to finish the album today, as long as no one rings the doorbell.
When a doorbell rings, its common for dogs to become startled, stop everything they are doing, and bark loudly: in this case, that would set a chain reaction of havoc off -- the cats would become scared of the barking and run away, etc. The recording people are confident that this is the only thing that could foil their odd plan to record this pet-band playing music.