My first dog was pretty amasing, to me at least. He helped me get over my fear of dogs, he learned quickly and was eager to please, and was my best friend.
The truly amasing things included his ability to understand the rules of the game "tag", and his ability to detect seizures in my mom's dog. The tag thing was great though, because I became the unofficial Yard Duty at age 14 for an after school YMCA at the grade school near me. I'd take my dog there to play in the fields and the little ones would come and want to play too, and they loved to chase Aussie and throw balls for him. So one day we combined it, and it took one lesson of a kid 'tagging' him and me calling him to come and give me his ball for him to get the idea. After that, the kid who caught him got to throw the ball and once a child touched him he came right back and dropped the ball at my feet.
Mom's dog was more impressive. Shelby was brilliant, but cat-like. She wouldn't listen unless you used her weakness... people breath. How she hated people breath. We at first thought she was the dumbest thing on four legs. However, one day I was teaching Aussie to 'spin' and Shels was just getting in the way, so I breathed on her to get her to leave. Instead, she gave me this "oh, sorry!" look... and spun in a neat little circle. I tried some of the other tricks I'd taught my dog by that point (roll over, shake with both paws, high five, etc) and darned if she didn't know them all. She learned by *watching* me teach my dog.
She also had a cast iron gullet. She ate: the screen from the screen door, our deck, two 6-foot tall Birds of Paradise, a cactus, every rock and stick in the backyard, 3 books, the plastic handles off of 2 steak knives, my homework once, and an entire brand new bottle of her phenobarbitol. She was near dead when we found her, but she was home 3 days later from the vet and acting like nothing ever happened. She also was the gentlest creature that will ever live, and this always amases me when I remember it. Mom found a baby, unfeathered bird that she was able to put back in the nest. However, Shelby came to sniff it first and while Mom was fearing a "gulp!" was imminent, Shels gently licked it once, then sat down and watched it carefully. Best dog ever.