Cigars and pipes differ in design from cigarettes, which are made from tobacco wrapped in thin paper. Cigars are wrapped in tobacco leaves, and unlike cigarettes, they don't typically have filters. In pipes, the tobacco sits in a bowl at the end, and a stem connects the bowl to the mouthpiece. Pipes can be equipped with filters. Another type of pipe, the water pipe, consists of a body filled with water, a bowl in which the tobacco is placed, and an attached tube and mouthpiece through which the pipe is smoked.
The main function of dog training leashes is to prevent a dog from escaping and getting into trouble. However, even the best trained dogs are often required to wear a leash due to local leash laws. Leash laws are generally enforced in parks and other protected areas.
The Function of the Vibrissae. Dogs apparently analyze their surroundings by using their vibrissae. These whiskers are sensitive to air currents, which cause them to vibrate. A dog then uses these vibrations to determine if obstructions exist in his immediate area, as well as their nearness, sizes and shapes.