Elsecomment I mentioned a recent article. Scientists Find a Surprising Link Between Cats And Happiness Across 93 Countries - https://www.sciencealert.com/scientists-find-a-surprising-li...

> "What we found is that countries with more cats tended to report higher levels of happiness, while countries with higher exposure to Toxoplasma gondii tended to report lower levels of happiness," say the study authors in a press release.

The paper itself is https://doi.org/10.1371/journal.pone.0357911