https://www.ranker.com/list/animals-born-with-bizarre-mutations/amber-fua
https://list25.com/25-surprisingly-real-life-animal-mutations/5/
http://www.dailymail.co.uk/sciencetech/article-3662245/Mutant-frogs-skin-showing-skeletons-beating-hearts-Russian-scientists-say-pollution-blame-transparent-amphibians.html
http://www.dailymail.co.uk/news/article-1049610/Ready-Tiddles-Meet-cats-sprouted-wings.html
https://news.nationalgeographic.com/news/2006/11/061106-dolphin-legs.html
https://www.popsci.com/environment/article/2009-09/snake-clawed-foot-found-china
http://www.mindblowing-facts.org/2012/11/a-snake-with-a-foot-was-found-in-china/
https://www.express.co.uk/news/nature/664370/Farmer-freak-unicorn-Mutant-animal-extra-horn-pollution-danger-alien-weird
http://www.mirror.co.uk/news/weird-news/unicorn-cow-stuns-farmer-after-7830943
http://www.dailymail.co.uk/news/article-2621732/Billy-squid-Eight-legged-octogoat-kid-born-Croatian-farm.html
http://www.independent.co.uk/news/weird-news/octogoat-eight-legged-kid-born-on-croatian-farm-9332171.html
http://www.dailymail.co.uk/sciencetech/article-1100030/Whats-Doc-Meet-Vincent-rabbit-born-ears.html
https://news.nationalgeographic.com/news/2011/10/pictures/111013-shark-albino-one-eyed-fetus/
http://www.nbcnews.com/id/17217248/ns/world_news-weird_news/t/it-doesnt-walk-duck/#.WlGkjVWnE2w
http://www.telegraph.co.uk/news/uknews/1549066/Stumpy-the-duck-is-down-to-three-legs.html
http://www.mirror.co.uk/news/world-news/mutant-two-headed-pig-two-11128148