Will too much salmon give your 8yr old gsd mustard coloured loose stools?

Yes, feeding your 8-year-old German Shepherd too much salmon can lead to mustard-colored loose stools. This can occur due to the high-fat content in salmon, which may upset their digestive system, especially if they are not accustomed to it. Additionally, salmon can sometimes cause gastrointestinal issues if overfed, leading to diarrhea. It's best to introduce any new food gradually and consult with a veterinarian regarding a balanced diet.