When our dogs face challenges like joint and hip issues, these can manifest as stiffness, discomfort, or decreased mobility. Other common signs include limping, difficulty moving, swelling, behavioral changes, and licking/chewing at the affected area. If you've noticed a change in your dog's appetite, whether a sudden decrease or increase, it could be a sign of underlying liver stress. Lethargy, accompanied by a lack of enthusiasm for activities, may also indicate liver issues. Moreover, signs of nutritional deficiencies in dogs can vary based on the specific nutrient lacking in their diet. Some common ones include a dull coat, skin issues, or decreased overall energy.