Related Clues:

• Pen sound
• Sty reply
• Pigpen peal
• Hoggish bellow
• Barnyard noise
• Porker's plaint
• Pen output
• High-pitched cry
• Sty sound
• Porcine grunt
• Pigpen cry
• Pen pal's comment?
• Porcine sound
• Word from a pen pal?
• Word from the pen?