Right off the bat, I would like to thank Karen Thomason for this information. She commented on my last posting concerning names, etc. In the discussion, I mentioned how I pick up my dogs on the 49th day after birth. In fact, I got that datum from a Richard Wolters book 20+ years ago. Since then, I've seen no reason to doubt the veracity of the information, but I have always wondered about it and why he was so explicit in the EXACT day. Karen's link to a study in 1994 is an answer to many questions about dog development, growth and how to enable them to reach their maximum potential.
This is interesting reading for dog men and women and answers a lot of questions. Enjoy!