W'Zis 100% natural, grain-free, plant-based treats have a deliberately firm texture and angular profile to prolong the eating time and promote teeth cleaning. But you can afford to be generous; these healthy morsels only contain 1 calorie per treat, perfect for training. Slipper & BiscuitSave your slippers and consume fewer biscuits — let our treat fill the void. Slipper & Biscuit’s green and yellow colours are flavoured with pooch favourite peanut butter. The contrasting green is the natural result of adding broccoli and breath freshening apple.