http://www.animalfactguide.com/animal-facts/

https://animalcorner.co.uk/

http://kids.sandiegozoo.org/

https://kids.nwf.org/kids.aspx

http://kids.nationalgeographic.com/animals/

https://a-z-animals.com/animals/

http://www.softschools.com/facts/animals/

http://www.sciencekids.co.nz/sciencefacts/animals.html