Possible Clues:

• Feline breed
• Asian feline breed
• Feline's naughty, as eats mice
• A potential asset with mice around?
• What might be cunning, as eats mice?
• Elegant thing with old tie, we hear, and whip
• Elegant beast, one bracketed in similar caste, perhaps
• Animal seen in East, as mice scattered?
• Meat Cassie cooked for pet
• Either 'Lady and the Tramp' antagonist