Dogs are man's best friends, and they deserve the same love that they give us. They're also very different from cats. One of these differences is their diet. Dogs need to eat more than cats because they have a higher metabolism rate and bigger body size, but it can be hard to find out what your pup needs without consulting a vet or researching online. Here are some minerals and vitamins that you might want to consider adding to your dog diet so that they stay healthy.