It has a bulldog on it which is why I bought it from Whole Foods about a year ago. It was fairly tasty, but for me the bottle was the selling point.
According to phrase finder Hair of the Dog describes a small measure of alcohol meant to cure a hangover. The full phrase "hair of the dog that bit me" refers to an old Scottish belief that if a person was bitten by a rabid dog a hair from the same dogs applied to the wound would cure them. It is similar to the phrase "like for like" meaning that the cure for something is often also its cause. The phrases connection to alcohol dates back at least to the time of Shakespeare. Whether or not the cure works is a matter of debate, but the phrase is certainly not going away any time soon.
