Warmies for Pets Microwavable Stuffed Animal: Calico Cat is a cuddly companion with purr-sonality, ready to provide hours of soothing warmth and a gentle weight to comfort your pet. This microwavable stuffed animal will help calm your dog or cat when they Weighted Plush: All Warmies contain real grain filling. This plush for pets provides a cozy, comforting feel. A relaxing solution for crate time, travel, or when your pet needs a soothing snuggle. Removable Hot-Pak for Soothing Warmth: Remove the heat pack from the backside and warm in the microwave for 30 to 45 seconds. Enjoy soothing warmth for up to 2 hours.