- https://www.lastampa.it/la-zampa/altri-animali/2021/08/01/news/in-africa-gli-scimpanze-uccidono-i-gorilla-e-la-prima-volta-e-colpa-del-surriscaldamento-climatico-e-della-fame-1.40556763?fbclid=IwAR3Zf5UrAim4iReZ5GEp_Xg_f_d6UsbazGxl0Yj18byqKzvU3LnJ8ZiRmNg
- https://www.kodami.it/sono-63-milioni-gli-italiani-partiti-in-vacanza-con-il-proprio-compagno-pet/