She has trained you to feed her something different. Put the food down twice a day, if she doesn’t eat it in 10 minutes, take it away. Feed nothing till next meal time. She may hold out for 3 days, but she will eventually start eating when she is hungry AND realizes you won’t give in. I want my dogs to eat what I give them immediately. So I teach them that there is no alternative. I have no problems with adding scraps or giving treats, as long as my dog will eat what I put down. This way, if my dog doesn’t eat her food in the normal 60 seconds, I know she is sick and is going to the vet immediately. If you let your dog be picky you may never know when she is really sick.
The way I explain it is, if you put oatmeal in front of me, I will only eat it if I’m really hungry. I am not that fond of oatmeal. If you put ice cream in front of me, I will find room for it no matter how full I am.
I find that most people are feeding their dogs way too much food. Then if the dog doesn’t finish because they are full, the people panic and add something to get them to eat. Creates a monster. The dogs know that you worry if they don’t eat and they play games and hold out for something better.
If your dog always eats immediately, and then suddenly doesn’t, then yes, go to the vet.
