?Heartbeat Simulator Module + Plush Toy?The WEOK product contain a plush dog toy and a real heartbeat simulator Module. The heartbeat Simulator need 3 AAA batteries(No battery included in the package). Press the button, then the heartbeat module works. Easy to operate. ?Durable & Machine Washable?The WEOK dog anxiety toy is made of comfortable and high quality fabrics, support machine washable on gentle cycle, just remember to remove the heartbeat simulator before cleaning. ?Perfect buddy for our new puppy?The WEOK heart beat dog toy for puppy can help dogs not bark, howling and make noise when they are alone, with the company of heartbeat stuffed animal toy to make dogs adapt to their kennels or dog bed, reduce the dog's sticky behavior and sleep aid at night, let the dog sleep well. ?Suitable for all kinds of dogs and cats?Whether an older rescue dog or a new puppy, the WEOK Heartbeat Puppy Toys help your special pup through the tough times with comforting calmness from a warm, cuddly friend with a heartbeat can ease their fears and offer general anxiety relief. This heartbeat stuffed animal helps your dog find the peace and relaxation they need. ?Crate Training Toy & Sleep Aid Toy?When the time comes for crate training, cuddling with WEOK heartbeat buddy will help reduce negative behaviors, such as whining and barking,which means you will get more sleep at night. It is a good behavioral training aid toy which could comfort your puppies. ?Anxiety Relief?WEOK heartbeat puppy toy which is a simulation of the true pulsing heartbeat enables the puppy to feel the comfort. It can help puppies and cats to relief the separation anxiety, loneliness, go through the tough time and adapt the new home or other complex environment. Important tips for heartbeat device: Press and hold the switch long enough, it works; Press and hold the switch long enough, it stops.