PetSafe® Stubborn Dog Add A Dog® Extra Receiver Collar Collections_Australian Made The optional Slow Feed setting The optional Slow Feed setting dispenses meals in small amounts over 15 minutes for pets who tend to eat too quickly This weatherproof unit has a range of 15 metres in front of the unit The collar features 4 levels of static stimulation at a higher intensity especially for stubborn or hard to train dogs This PetSafe® Stubborn Dog In Ground Fence extra receiver collar can be used to add another dog to your PetSafe® In Ground Fence system or as a replacement collar (not compatible with the UltraSmart® and YardMax® systems)