[qb]But dogs are range animals, like wolves and mountain goats and so on. Their bodies are made to run long distances and to have a large territory to explore. [/qb]
Hmm, my dog sleeps 16 hours a day ... he must have lost that natural instinct. <img src="/images/graemlins/laugh.gif" alt="" />
IMO, crate training is fine as long as you make sure your dog gets plenty of exercise in the morning or evenings. When I was training my dog, I would come home at lunch to make sure everything was okay. He's five years old now, and he loves his "house." He's old enough now for us not to have to actually latch the door on it, but we have done so when we've moved to a new apartment or when other things have disrupted our routine.
Also, I don't really think it's fair to compare crate training to the treatment of veal calves. A proper crate should allow a dog to stand, turn around fully, and lie down without being in a cramped position. Otherwise it's too small. And hopefully, your friend will only use the crate on occasion once the puppy is trained.
Here's a
great article if you would like more information. Plus, here are some great
links from the Bella Dogs site.