Related Clues:

• Sound from a 43-Across
• Bull's warning
• Man's back — time for little drink
• Bull's noise
• Pen noise
• Express indignation
• [Snort]
• Sound in a stable
• One of eight in 'Old MacDonald Had a Farm'
• Some buffalo in Kentucky making grunting sound
• Pig says what?
• Nasal sound of scorn
• Piggish remark from Keiko in Kyoto
• Sound of a bull
• Noise heard on a farm