The adaptil collar contains effective pheromones that help to relax puppies and adult dogs in stressful situations the pheromones used mimic those produced by a mother dog to calm and reassure her puppies as they grow and discover the world dogs recognise these pheromones throughout their life meaning they can help to prevent stress related behaviours not only in puppies and young dogs but adult dogs too the adaptil collar can be used to help tackle the following stress related behaviours