The metal run for small pet puppies is tailored to meet the needs of puppies and their mother one panel has a gate on a raised threshold which prevents your puppy from leaving the pen but allows the mother to easily come and go this keeps your puppy safe from anything dangerous both indoors and outdoors this puppy pen is very sturdy and can be made smaller or bigger as required this run can be set up in no time at all the 8 metal sides are held together with connection pins and individua