Boa
http://en.wikipedia.org/wiki/Boa_constrictor
http://nationalzoo.si.edu/Animals/ReptilesAmphibians/Facts/FactSheets/Boaconstrictor.cfm
http://www.sandiegozoo.org/animalbytes/t-boa.html
http://animals.nationalgeographic.com/animals/reptiles/boa-constrictor/
http://en.wikipedia.org/wiki/Boa_(genus)
http://animaldiversity.ummz.umich.edu/site/accounts/information/Boa_constrictor.html