You should make sure the bitch is up-to-date on all her vaccinations, medications, and shots before she is bred. She will require supplementary food during the last three weeks or so of pregnancy. In general, puppy food is formulated both for puppies and pregnant or nursing bitches.

A quick Guide to Caring for your Dogs.

You should have a sturdy, clean, proper sized whelping box for the litter. It MUST include a "pig rail" around the edge to prevent the bitch from laying on or smashing her pups. It should be big enough to allow the bitch to turn around but small enough to prevent the pups from being "lost" in the unused portions. About six inches longer than she is, fore and aft, when laying prone (as in suckling her puppies) and about a foot on either side length wise.