Related Clues:

• Sound of a cat or gull
• Sound from a 57-Across
• Catty sound
• Kitten's plea
• Dull roar?
• 13-Down greeting
• Sound in a vet's office
• Cry from a kitten
• Cat's "Please pet me"
• Whine from Whiskers
• (Where's my catnip?)
• Copy a cat
• Mouser's call
• React to ear scritches, perhaps