A new Florida bill would make it illegal for dogs to stick their heads out of car windows in the Sunshine State. State Sen. Lauren Book, a Democrat who represents parts of South Florida, introduced the animal welfare bill last week. It would prohibit a dog owner from allowing their pet to "extend its head or any other body part outside a motor vehicle window while the person is operating the motor vehicle on a public roadway." If the bill is passed, dogs must also be on a harness or in a pet seatbelt when traveling in a car.