Bests & Worsts Reviews from Amazon

I have been buying this toothpaste every time i need it. This time i received two brown toothpaste. At that time, i didn't think much and gave it to my dog. After i gave it to them, i went on Amazon and found some of the review stating their dog have been sick and vomiting after the use of brown toothpaste. I was scared, and i return it immediately. You can see the picture after i squeezed about 1/3 of the toothpaste out it became white. I was wondering why the toothpaste turned brown. I will continue to monitor my dog and see if anything wrong with them. I will try to update my review and document it so other customers are able to know what to do when they received a brown toothpaste in the future.