Toodles Galore is an attractive white female cat, and is supposedly Tom's usual love interest, although Tom is a reputed playboy, and had other love interests before and after Toodles.
Toodles is the only love interest who appeared more than twice, and is probably the most favored. During the classic era, Tom had to compete twice against Butch and even once against Spike/Killer for Toodles' affection, and he lost them all.
In one episode, "Casanova Cat", Toodles fell in love with Jerry. However, in her final short, "Love Me, Love My Mouse", she remained with Tom. Toodles is one of the most anthropomorphic animals in the series; her only feline features are her tail, nose and ears.