The parting shot of the two felines departing their homes, resembles the Lower East Side of NYC, with the Williamsburg Bridge in the background. This would make sense, as apartment humor was more suited to New York and had long been the subject of film and TV productions.
The Chick Jones animated TV special How the Grinch Stole Christmas premiered a few months after this cartoon was released. The characters here resemble those who would appear in the holiday cartoon, as Jones was refining his design of that cast.