for us we didnt really change much at all. we had to wean the dog off sleeping on the bed to her basket at the foot of the bed a few months before DS arrived, she doesnt have dinner until after DS has and isnt allowed to take his food or play with his toys (much as she'd like to!). she was a bit sad at first cos my time was so much focused on DS but we soon found she fit on the rocking chair under DS when he was feeding (who needs a feeding pillow??) and he is firmly higher ranking than her in our pack.
the hardest thing for us was teaching her she couldnt walk across his play mat or share his food but now the are no issues. he feeds it to her on purpose *sigh* and tries to force her to play fetch hehehe