On St. Thomas, U. S. Virgin Islands, a law states that a person can still receive $1 for the delivery of a dead mongoose. (The mongoose was brought to the island to get rid of snakes; now there are no snakes, but a overabundance of mongoose.) And in Florida, it is illegal to swim in the same waters as a manatee.

I live in Illinois. Here are a few from my lovely state:

-You must always carry at least a dollar on you, or you could be arrested for being a vagrant.

-Drivers must warn the police before entering a city in a car.

-You cannot give a dog whiskey in some Illinois cities.

You can't spit on the street in Philadelphia. A friend told me once that this law goes back to a time of epidemic when they feared that too much public spitting was part of the spread of disease. 

Here is a list of strange laws in different states.  I have provided the link to California.  My favorite is the law that says that people selling their homes in California must notify the buyer if they suspect that the house is haunted.