https://video.nationalgeographic.com/video/news/00000164-6c49-dc77-a365-7cef0f520000

https://animals.sandiegozoo.org/animals/babirusa

https://www.iucnredlist.org/species/136446/44142964

https://www.iucnredlist.org/species/2461/9441445

https://www.flickr.com/photos/70233571@N06/34620409501

https://www.oregonzoo.org/gallery/tags/north-sulawesi-babirusa

https://www.manadosafaris.com/babirusa-endemic-tour/

https://www.dailymail.co.uk/femail/article-3937762/The-Secret-Life-Zoo-hidden-cameras-capture-incredibly-moving-birth-rare-babirusa-pig-believed-time-filmed.html

https://www.reddit.com/r/natureismetal/comments/7wrhny/boars_tusks_growing_through_roof_of_its_mouth/