Just like human beings, dogs may need an extra food supplement at certain times. For example, a growing puppy needs essential fatty acids such as fish oil, which is rich in DHA, for proper brain development. The same is the case for senior dogs, for example, as special nutrients can improve the ageing dog's general health. Food supplements can often help dogs with special conditions, such as skin and coat or musculoskeletal problems. Ingredients like zinc and biotin are well known to be beneficial for the skin and coat. More and more vets and dog owners are seeing the benefits of food supplements for their dogs.