https://www.newsweek.com/photos-wild-lion-adopts-leopard-cub-unprecedented-sight-636182

http://www.animalorphanagekenya.org/interspecies-adoption/

https://www.pri.org/stories/2013-10-22/interspecies-love-30-most-unlikely-adorable-animal-pairs

https://www.pri.org/stories/2013-10-22/interspecies-love-30-most-unlikely-adorable-animal-pairs

http://kellyrowland.guff.com/when-animals-adopt-interspecies-mamas/mama-cat-squirrel-son

https://www.semanticscholar.org/paper/Cross-genus-adoption-of-a-marmoset-(Callithrix-by-Izar-Verderane/3971a38346056af0df2bf62c4eaa1d9255e8ab58

http://kellyrowland.guff.com/when-animals-adopt-interspecies-mamas/scared-skunk-finds-feline-makes-mom

http://kellyrowland.guff.com/when-animals-adopt-interspecies-mamas/a-new-tiger-mom

https://www.rover.com/blog/adorable-dog-moms-fostering-animals/