[Michael M]

Yep, Filler has really gotten a bad connotation. It’s gotten it for (mostly) good reasons of course. However, everything has to have some sort of “filler” in it unless you’re going a purely raw and natural diet.

I think following anon101’s advice makes the most sense and I was going to recommend the same. Also, if you don’t trust your vet, go find a new one! If you love your dogs, you can always get a second opinion. I do the same for my own health, and would also do the same for my pets.