The Velo-Dog was a pocket revolver originally created in France by Charles-François Galand in the late 19th century as a defense for cyclists against dog attacks. The name is a compound word composed of "velocipede" and "dog".
The hammer is shrouded to avoid its snagging on clothing, so the weapon is double action only. All have short barrels and originally fired the 5.75 mm (.22 calibre) Velo-dog cartridge, although many of the Velo-Dogs produced after 1900 accepted .22 LR or .25 ACP rounds. Another feature on many late models Velo-Dogs is the lack of a trigger guard, and a trigger that folds into the body of the weapon when not in use. For the more humane, there were cartridges loaded with cayenne pepper or dust, or which had bullets made from wax, wood or cork.