Related Clues:

• Barnyard bleats
• They're heard in a herd
• Calls from a 27-Down
• "The Whiffenpoof Song" sound effects
• Pigpen sounds
• Sheep noises
• Sounds from the pen
• There are eight in 'Old MacDonald Had a Farm'
• Pasture calls
• Cattle comments
• The non-silence of lambs
• Barnyard bellows
• Calls to Bo Peep
• Cries in sties
• Babe's output