BLUE Kitty Yums Savory Salmon Natural Soft Moist Treats. BLUE Kitty Yums are the perfect way to reward your favorite feline. Made with real salmon as the first ingredient, these tender morsels are packed with flavor that will leave her purring for more. Blue Buffalo BLUE Kitty Yums Natural Soft-Moist Treats. Tender, tasty morsels loaded with real meat for a taste cats can't resist. Made with the finest ingredients available, BLUE Kitty Yums do not contain any chicken or poultry by product meals, corn, wheat or soy.