We should be over-protective moms. I had the same situation in my vet's office. One of the staff came in to weigh & take my Muffin's temp and the first thing she did was open a drawer behind her and give my Muffin something that she ate. It was a Greenie! I was so stunned when I saw the pkg in the open drawer that I had to bite my tongue to give her a piece of my mind. Now I want to change vets because I don't want them feeding her crap when my back is turned. Sometimes they take the dogs into onother room to give them shots, stating that they need someone other than the owner holding them. I think they don't want to get bit coming at mom/dad with their hands out to reach them for their shot. Anyway... I don't feed my pups crap and Greemies and Cheezwhiz fits that category. So... I agree with you. We need to stand our ground when it comes to the health of our dogs... and WHY would someone who is supposed to be a professional do something like that!?!!
