Guinea pigs are cute, sociable animals that are susceptible to loneliness when they do not have a companion.
Switzerland, a country that prioritises animal rights, has made an effort to prevent guinea pig loneliness by actually making it illegal to keep only one guinea pig - there must be at least 2.
Subsequently, this also gives some guinea pig owners a problem: what happens when one dies? This has given birth to a new business niche; rent-a-guinea-pig services.
It makes sense. If the lonely guinea pig is also older, it may not be practical to actually invest in a companion and enter a cycle of replacing guinea pigs. Instead, the rent-a-guinea-pig service enables people to do exactly what the name says - rent a guinea pig for as long as needed, then return it.
All in all, loneliness is no problem for guinea pigs in Switzerland!