It is a herding dog... it was bred to work outside all day chasing after livestock. A healthy corgi is an active one.
Though now they are becoming more popular in my area, I am seeing them weighing 40,50+ lbs. These porky dogs are likly not active due to their morbid obesity and the issues surrounding that problem. One woman I see rountinly at PetSmart has a 70lb one, this is a dog that should be in the 25-30lb range, 35 for a bigger male, but my male is looking his best at a little less than average, about 23.5-24 lbs. The woman with the 70+ lb corgi always fusses over how 'underweight' my dog looks. But my dog, though sweet-tempered and a big cuddle bug, enjoys long walks and playing outside and never comes home too tired to keep on playing with his sister, chasing the cats, barking out the windows at the neighborhood, and in general bouncing off the walls and furniture.
Corgis that are not given a chance to burn their energy, like many dogs, very quickly find themselves getting into trouble, chewing holes in the walls, digging through the trash, etc. They are BIG barkers, so it is important to teach them as early as possible the bark and to quiet on command. They love to chase after anything that moves, and tend to herd other animals and small children, nipping at their heels - another behavior that should be addressed as early as possible.
Read all you can about Pemmies before deciding whether this breed is the best fit for you - they need daily exercise, consistant obedience training, they should be in a home with older children only due to their herding/nipping behaviors, they SHED. If you can commit to working with these little pesky details however, this is a great breed to share your home with. They are intellegent, goofy, sweet, loyal, stubborn yet eager to please dogs that act like 'big' dogs but in a neat little package.
Consider a Corgi rescue if you are looking for a new pup. The rescue we got Dora from is out of foster homes to take in 'good' dogs that are being given up by families who are unable to financially care for them any longer. They are often in good health, well socialized, and already house and obedience trained, and cost a lot less than a new puppy from a breeder.
Many people mistakenly classify them as small dogs when if they had longer legs they would be fairly large balls of fur.
Many are full of energy-and they should be-they are a herding breed. Anyone who says their puppies will grow up to be quiet apartment dogs is a bad breeder.
With most I don't think energy is the problem so much as hair. My corgi sheds much worse than my husky. It seems to be one of the top reasons people rehome them along with activity level,biting and barking.
Females are the more dominant sex in the breed. Usually its the male dog but with corgis the males are the more laid back.
Rescue is usually full of them. People get them because they are cute pups but never research what they grow into.
The furminator works wonders to.
If I have any beliefs about immortality, it is that certain dogs I have known will go to heaven, and very, very few persons -James Thurber