Dogs lacking trace elements can eat animal liver, carrots, soy products, seaweed, egg yolks, apples and other foods. When feeding, pay attention to the combination of meat and vegetables, so that the nutrition is more balanced. Don’t just feed your dog one kind of food. To prevent dogs from being malnourished and prone to being picky eaters, you should also let your dog spend more time in the sun to promote the absorption of nutrients.