Beware the Mare - Beware the Mare, Bk 1 Author:Jessie Haas, Martha Haas (Illustrator) When Gramp brings home a pretty bay mare, she's everything Lily has dreamed of in a horse -- strong, lively, affectionate, and eager to please. Under her grandfather's watchful eye, Lily learns to care for the horse and the mare learns to trust her. Still, Gramp is uneasy. Why would a horse this good be named Beware?