Calling all cars! Calling all cars! The police sirens are sounding loud and clear! Add this official sound to your furry friend and know that help is on the way! Sound chips have a maximum life of 2 years, but exact lifespan depends on usage. For example, a 10 second recording will last roughly 1,350 plays. Please note Furry Friends can hold 4 Sounds and 4 Scents. Additionally, Scents must be purchased inside a Furry Friend.