Corgis seem to understand lots of stuff better than I do. We have four Cardigans and as examples they do this kind of stuff -
I'm at the park with 2 of my dogs, 2 large horse sized dogs jump unleaded out a car at the other side of the park. I'm thinking cool I'll just make a quick exit but no my Corgis got other ideas. They start barking wildly at these huge beasts who make a bee line directly towards us, I'm thinking this is really going to suck. Luckily the big dog owner calls her monsters off and they return to her. I've got to drag my dogs away barking and then they swagger all upright and proud like it was a great victory or something. Good thing for those big dogs that they got called off!
Corgis can't fly. Why then would they get airborne off of table/counter tops, beds or even over the backs of sofas? I just can't figure this out but they all do it. Sometimes they are gaggling with excitment at launch time, sometimes the landing is beautiful and smooth but other times results in a face plant. I think they would learn but it really takes years before they get a clue about this. Even SunnyD, who recently had elbow surgery, seems to forget to take the easy way down. Fly? I'm surprised any of them can still walk.
Why do Corgi's try to "dig" into the carpet or the bed?
Why can I only give my dogs one bone at a time? If I give each dog a bone WWIII breaks out but one bone for all of them, hey, that's ok with them. Go figure?
Very smart dogs indeed!
Ranking dog intelligence is problematic at best. There is no question they are highly evolved and have an uncanny ability to get us to do what they want. I doubt there will be any question as to the incredible intelligence of the border collie. Some of the research being done has shown this breed to be intelligent to the point of being scary. Research has also blown away the theory that dogs are just good actors and all intercourse with humans is instinctual rather than a manifestation of actual intelligence. After 40+ years of canine rescue and some 2000 animals, I have no doubts that dogs are a hell of a lot smarter than we are comfortable with sometimes. With the possible exception of the border collie, I think dog intelligence is an individual and subjective quality. On any given day, any dog can act or react in ways that border on mind boggling. The next day the same dog can appear to be a moron.
My wife and I had a family of four Basset Hounds. According to most "ranking" experts, they are dim witted at best. Horse puckey! I had days when I would have given anything to be able to see into those little heads. Like any other breed, they have good days and days that make one wonder. The lists you see here on the web are questionable at best. There are too many variables. Like i said, on any given day your dog can act like Einstein and the next display a doggy IQ of zilch. I have my good days and other days that ain't so hot. I suspect dogs experience the same swings in cognitive ability.
Don't try to equate your dogs intelligence to one of your kids. The thought processes are just too different to compare. And, the dog may come out on top. Actually, I have seen enough samples of both species to think the canine may have an edge. I much prefer dogs to children. They are generally better behaved and much less demanding.