Related Clues:

• House pet's plaint
• 48-Across's sound
• Copy cats?
• It may be heard after littering
• Sound of a fine-tuned engine
• Persian utterance
• 'I'm happy' in Siamese?
• Siamese 'please'
• Cry from a litter
• Sound of satisfaction
• ''I'm happy'' in the Siamese?
• Catty comment
• Copy cats
• Cat ''aah!''
• Sound of contentment