Super curious about this, and I haven't been able to find any info on it. It's just interesting the number of apartments that allow pets, but they only mean small dogs.
Where I previously lived, it's the other way around. Dogs are seen as more disruptive (I guess due to barking and noise concerns), and so, cats are more likely to be allowed in apartments due to the perception that they are quieter. But here in Japan it seems to be the opposite.
I'm guessing it has to do with fears of cats scratching the walls and damaging the apartment that way?
by Unfortunate_Lunatic