all for paws puppy anxiety relief comfort toy, dog sleep aid plush toy, heart beat behavioral aid toys for puppies afp all for paws puppy behavioral aid dog toy heartbeat sheep is designed to help your dog cope with everyday stressors. this comforting toy recreates the intimacy and physical warmth that your nervous pup craves in times of stress due to loneliness, fear and separation anxieties. this stuffed animal behavioral aid also features a real-feel, pulsing heartbeat and heat source that works to calm your pup and reduce negative behaviors such as barking and whining. you can switch the heartbeat function on and off as desired. the closure has already upgraded to velcro version.