The side effect of Kato’s anti-piddly-pants medicine is written on the leaflet in bold capital letters - "some dogs may experience INCREASED ATTRACTIVENESS" but it doesn’t say attractive to what or whom.
I imagine Kato being magnetic, disrupting pace makers and electrical equipment. Cutlery flies off tables as we pass by houses and televisions get good old fashioned interference. Street lights flash, burglar alarms and car alarms go off, electric pylons fizzle and road traffic signals fail. The lovely Kato oblivious as behind us hard drives wipe themselves, vacuum cleaners turn on and off, and washing machines flood.