Leu is a Leucrocotta and River's pet. He has blue and white fur with a purple chest and black markings and red eyes.
Stubborn, feisty, and focused, Leu is the kind of spunky pet who likes what he likes, thinks what he thinks, and acts far before realizing what he's got himself into. He is a hard-to-crack guy. Despite his scowl, he is a beautiful gem, and also possesses a softer and more understanding side, shown when he feels that someone's feelings have been hurt (and not from some rude comment).
Leu can mimic other animal noises such as lion roars, wolf howls, and birds screeching.
He also has retractable teeth.
Trivia:
Leu is named after his species.
He is shown to enjoy music and sometimes becomes wild when dancing.