- Simulated Heartbeat & Warmth: This heartbeat toy mimics a real heartbeat and features a reusable volcanic stone heating pack that provides warmth for up to 4 hours. It helps your puppy feel a comforting presence, making the crate less intimidating and more like a cozy den. - Natural Calming Solution: Designed to reduce anxiety and loneliness in pets, this adorable toy utilizes instinctive comforts rather than medication. The combination of a simulated heartbeat and warmth soothes crying, eases feelings of isolation, and helps alleviate separation anxiety. - Easy to Maintain: Operated by 2 AAA batteries (not included), which last approximately 3 weeks with continuous use. Battery replacement is straightforward. For cleaning, simply remove the heartbeat box and heating pack before placing the toy in the washing machine. - Versatile Use Cases: Ideal for puppies adjusting to their new home, pets coping with separation during work hours, or as a comforting companion for animals during travel or vet visits. It provides a sense of security, making each situation more manageable for your furry friend. This product is designed for puppies and small dogs, ensuring compatibility for a wide range of breeds. Made with safe, durable materials, it prioritizes your pet's comfort, helping create a positive environment for all stages of development.