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Amazon.com : Calmeroos Heat Pack Refill (6 Pack) - Body Heat Simulator Pack for Cat and Dog Toys - Each Disposable Pack Gives 36 Hours of All-Natural, Odorless, Environmentally Safe Heat : Pet Supplies
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Amazon.com : Snuggle Puppy Replacement Heat Packs for Pets - 6-Pack of Heat Packs : Snuggle Safe : Pet Supplies
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