Keep your dog soothed and comforted with the Smart Pet Love 24-Hour Heat Pack. Designed to go inside the Snuggle Puppy or Kitty Behavioral Aid Dog Toy, this heat pack recreates the intimacy and physical warmth that your pup craves in times of stress due to loneliness, fear and separation anxiety. Using all natural minerals, it starts warming up as soon as you remove it from the outer packaging—no microwaving, electricity, kneading or shaking required. The disposable design works for up to 24 hours, and you can preserve the heat by placing in a zip lock bag and squeezing out excess air when not in use.