A dog may be man's best friend, but before he can be best man at a wedding, he must learn to stop slobbering on children and giving toasts that are nothing but barks. Teach your dog the rules of gentlemanly conduct with today's Groupon: for $75, you get a six-week course or one in-home lesson from Canine Obedience Unlimited (a $150 value). Trainers will travel to homes within Montgomery and Frederick counties for in-home lessons.

Surrounded by 30 acres of lush terrain, Canine Obedience Unlimited gives four-legged family members an expansive, off-leash training experience. All training courses meet once per week for one hour to teach canines the essentials of sitting, staying, and break dancing on grass. Dog agility classes lay the groundwork and fine-tune the obedience skills necessary to navigate an intricate framework of weave poles and teeter-totters, whereas the interactive dog obedience courses tame all manner of behavioral problems in a small- to medium-size group format. Alternatively, the AKC S.T.A.R. puppy preschool is geared toward pooches ages 8- to 20-weeks old and teaches owners how to transform juvenile delinquents into upstanding canine citizens who hold doghouse doors open for their elders.

During private in-home sessions, Canine Obedience Unlimited's certified trainers bring their specialized programs into homes, addressing your dog's specific training or behavioral issue. These one-hour classes are designed to introduce canine pupils to new instructions and commands in a familiar setting and under the watchful eye of their favorite chew toy.