What should you be looking for before birth of pups?

First thing I look for is the breeding environment. Are the animals being socialized with humans? Is the pen area clean and do the pups seem healthy? Then, if I'm going to choose a pup, I generally choose the runt of the litter. Why? Because they seem to be the most loyal, simply because you've rescued them from a situation where they might not survive (that's not as much as an issue now days, but the runts do seem to be more greatful and loving). If that doesn't matter, then I'd let the pup choose you. My last one kept coming up and poking me in the foot with his nose while the others didn't seem to even recognize I was there. Narurally, I picked that pup and never regretted one second of having him. (Unfortunately, he just passed away from lymphoma (cancer) just before he reached 8 years old.) Just remember, you're making a commitment to the pup and he'she will make one to you, too. It's for life, folks, so treat 'em like they're part of the family and you'll be rewarded in more ways than I can mention.