Why do some Yarrah products contain parsley?

We occasionally use organic parsley from the Netherlands in both our cat and dog food. Parsley is really good for kidney problems, as it has a diuretic effect and purifies the blood. It encourages digestion too. Additionally, parsley can prevent gallstones and alleviate rheumatism. It will also make your pet look a bit better, as parsley contributes to fostering strong nails, hair and skin.