Most postwar homes had a radio like the carefully rendered tabletop model shown in the windowsill. And the circus was still a hugely popular form of entertainment, whether live, in person, or live broadcasts on TV.
The baby seal escaping from the circus references how circuses have a history of animal cruelty, sparking outrage from animal rights activists and organizations to the point where circuses in future decades have become increasingly animal-free and/or simply reduced their use of animals in live entertainment.