Look at CO2 footprint of pets and your toenails will curl.

E.g. https://newsroom.ucla.edu/releases/the-truth-about-cats-and-...

That also means if more then 1 in 50 people decide to have a pet instead of another child it's a good trade.

[1] https://klima.com/blog/how-to-cut-your-pet-carbon-footprint-...

[2] https://www.nature.org/en-us/get-involved/how-to-help/carbon....