Puppy Heartbeat Toy, Dog Heartbeat Toy for Separation Anxiety Relief, Puppy Toy with Heartbeat Stuffed Animal Anxiety Calming Behavioral Aid Plush Toy for Dogs Cats Pets (Brown +)Anxiety Relief: The heartbeat puppy toy simulates an atmosphere of accompany, 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. it is a good behavioral training aid toy which could comfort your puppies sleep better.Important tips for heartbeat device: Press and hold the switch long enough, it works; Press and hold the switch long enough, it stops.