If you have treated your dog or puppy with antibiotics, maybe wormers too, Dannon's yogurt which has the live cultures in it, read the label can help straighten out the digestive tract.
When you give the dog stuff to kill infections and possibly worms or fleas, you may also kill off good bacteria required in the digestive tract. That is where the the yogurt comes in.
Feeding extra calcium regularly can add to calcium deposits and actually cause problems with their hips and other joints. It is not recommended. Normal puppy food is loaded with way too much calcium and many GSD breeders suggest their puppies' owners skip puppy food altogether.
Babsy had ears that were playing with me. One day one would be up all the way, the next it would be sagging. Finally at about six months she had one all the way up and the other had just the tip folded over. I did not want to tape or glue, so I added a little calcium to her diet. Ear sailed up and I repeated this for a weak or two. Since then the ear has been up. I am not sure if all it really needed was another day or so.
Checked Babsy's hips and they are OFA good so I guess that didn't hurt her. She also had regular yogurt last summer when I was trying to get everyone back in shape after our colitis/dog show crud nightmare.
My point is a few tablespoons of Yogurt to help with digestion when indicated or after treatment shouldn't hurt a dog or a puppy. Regular calcium supplements are said to cause joint problems.