The Cutest Monster You'll Ever Meet: Hyde & EEK! Boutique Monster Halloween Dog and Cat Costume The Hyde & EEK! Boutique Monster Halloween Dog and Cat Costume ($13) will make you want to get up and do the "Monster Mash." It's too cute to handle. Image Source: target.com Hyde & EEK! Boutique Monster Halloween Dog and Cat Costume $13 from target.com Buy Now