ANAL SACS
Leave them alone; don't let your vet touch them in a puppy less than one year of age--unless they are truly uncomfortable. Nearly ALL anal sac problems are caused by vets expressing them too often starting at a young age. Once they start, they can never stop. Dogs in the wild do not need their anal sacs expressed, why should yours? Your puppy may scoot occasionally. It could be because of filled anal sacs, but it could also be because they have an itch or are trying to put their scent on the floor (after all that is what they are for!). Anal sacs can also develop problems whenever a dog has loose stools, so try to avoid this. If your puppy has loose stools/diarrhea, look for a cause. The wrong food is often the culprit--so try changing foods. Look at the ingredients--if the food has chicken, try one with lamb. See if a different food will cause the stool to harden up. Check for worms--they can cause occasional diarrhea as well. Unfortunately vaccinations often cause loose stools as well which is why so many puppies end up having their anal sacs expressed so often and end up with a problem. I suggest attempting to leave them alone while they are getting their vaccinations unless the puppy gets truly uncomfortable. If you can make it through the first 6 months without the vet expressing the anal sacs, you will be well on your way to having a dog that may only rarely or never need them expressed. Dogs fed a whole foods diet have VERY tiny, hard poops that naturally express the dog's anal sacs. I have only done one or two of my dogs ever--always after a bout of diarrhea. The rest of them have never been done--not even once.