regarding food for animals, they need a consistant diet. They're not like people, where we can have a different food 3 times a day and do just fine on it. Their food needs to stay the same, and if you DO change it you need to do it slowly by mixing the new food in with the old slowly until you gradually get to where it's all new food.
Picky eater animals are generally not too hard to deal with. If they're really picky eaters, then they'll get over it if they don't have any other options. I may not like broccoli very much but if that's all I can eat I'll eventually start eating it.
However, I find it interesting that the animals were on one food for such a long time and then suddenly stopped eating it, and it seems that shortly thereafter they started losing their hair. Could the two be related? If your vet can't solve this, you need to find another vet for a 2nd opinion.
|