A New Rule Was Brought In,

by the operators of New York's subway,

 it reads, 'No person may bring any animal on or into any conveyance or facility unless enclosed in a container.' no mention of what the container should be, so cunning New Yorker's came up with a new game plan,

 to allow them to use the subway,

with their pets, transport the pet in a shoulder bag so now everybody is happy, although the dog above seems a tad miffed.