Leopards were once believed to be a hybrid between lions and panthers, and the leopard's common name derives from this belief; “leo” is the Latin word for lion, and "pard" is an old term meaning panther.
One other interesting fact: Leopards have the ability to see in 1/8th of the light required by humans.
You can see leopards and the rest of Africa's "Big Five" on our Tanzania Classic Safari [1]!
Links:
[1] http://www.ietravel.com/TanzaniaSafariTours/index.asp?itinid=1238&ieid=628380
[2] http://www.ietravel.com/category/did-you-know
[3] http://www.ietravel.com/category/east-africa
[4] http://www.ietravel.com/blog/2009/06/did-you-know-1
[5] http://www.ietravel.com/blog/amazon-river/rainforest-conservation-world-wildlife-fund-anniversary
[6] http://www.ietravel.com/blog/amazon-river/birdwatching-hoatzins
[7] http://www.ietravel.com/blog/galapagos-islands-tour-guide-cristina-rivadeneira
