SmartPetLove Snuggle Puppy Behavioral Aid Toy Reduces negative behaviors resulting from anxiety, including whining and barking Real-feel pulsing heartbeat and heat source mimic being part of a pack, calming by appealing to natural instincts Two AAA batteries (included) last up to two weeks with continuous 24/7 use Disposable heat source lasts for 24 hours and is non-toxic and safe for people and pets Machine washable on gentle cycle