Oh! Don't have hurt feelings!! It is true though, people get so defensive about their babies and the vets are only trying to help. Even a tiny bit of weight goes a long way on these guys.
I love your babies, but Coco does look a little chunky and Pebbles looks a little chunky too. I just went through the whole LP surgery thing with Ranger so it was stressed over and over how it will be imperative that he does not ever get heavier than he is now. I can feel ribs on him fairly easily.
Maybe a walk around the block once a day would help? Or some extra playtime? I don't think they are obese, just a bit chubby but very well loved! I hope this didn't hurt your feelings- I know you care about your babies and it is shocking to hear the word obese. Sheesh, I can't imagine feeding a yorkie only once per day