Last updated at 17:05 BST, Wednesday, 11 September 2013
The word alligator comes from the Spanish 'el lagarto', which means 'the lizard'.
It's thought early Spanish explorers to Florida gave the creatures this name.
Trekking is an increasingly popular holiday or weekend activity. The word comes from the Afrikaans word trek, which refers to a long or difficult journey or migration, often by ox wagon.