Curtail dog
Cur"tail dog`\ (d[o^]g`; 115). A dog with a docked tail; formerly, the dog of a person not qualified to course, which, by the forest laws, must have its tail cut short, partly as a mark, and partly from a notion that the tail is necessary to a dog in running; hence, a dog not fit for sporting. Hope is a curtail dog in some affairs. --Shak.