When you think of oranges and health, the first thing that comes to mind is probably vitamin C; however, oranges offer many more nutrients that make them a healthy fruit for dogs. Oranges are rich sources of folate, thiamin, potassium, calcium and magnesium. They also contain flavonoids, an important component to strengthen a dog's immune system and connective tissues. Oranges also protect against cancer and can keep off viral infections.
In addition to the health benefits of vitamin C and the other nutrients found in oranges, this fruit many other health benefits. Studies conducted on humans show that consumption of oranges can help prevent cardiovascular disease, lower cholesterol levels, lower the risk of stomach cancer, promote respiratory health and prevent rheumatoid arthritis. While studies have not been conducted to find if these health benefits extend to dogs, chances are that your pooch may experience similar health benefits if he chows down on this citrus fruit.
Some dogs find citrus causes diarrhea or is hard to digest. You lessen the chance by removing the seeds and the rind before serving.