Pup Development Facts:

• 10 - 13 days: the eyes open
• 3 weeks: the milk teeth appear, they start to explore the den
• 4 - 5 weeks: short trips outside the den, begin to eat meat
• 6 weeks: moving up to a mile from the den (with adult wolf)
• 6 - 8 weeks: pups are weaned, traveling to rendezvous site.
• 12 weeks: begin to travel with the pack on hunts (with adult wolves)
• 15 - 28 weeks: milk teeth are replaced
• 7 - 8 months: begin to hunt with the pack

Beta Pack Facts:

The Beta is sort of like a second-in-command or a deputy. There is rarely two betas, often it is just one Beta. The Beta has the job of keeping the pack in order while the Alphas aren't around. When the Alphas return, they are no longer able to order around the pack.

Source: http://wiki.answers.com

Alpha Pack Facts:

The alpha wolves are usually the ones to make decisions for the pack when the group should go out to hunt or move from one place to another. The parent wolves are the leaders of the pack - the alpha male and alpha female.

Source: http://www.wolfweb.com