Certainly!
Example: Gnoll; HD 2d8; HP 11; AC 15; SV P, Equip: Battleaxe, Shortbow, Leather Armor; 6 GP
All monsters battle as though they were a fighter of that level, so a 2HD Gnoll fights as a level 2 Fighter. Coincedently, all Fighters get a Bonus to Hit equal to their level, so the Gnoll...