What causes the dog’s tongue to turn purple

The purple tongue in dogs is caused by lack of oxygen in the organism. Most dogs show signs of purple tongue due to abnormal heart and lung function, resulting in lower blood oxygen concentration. If the dog is poisoned, the environment is low in oxygen, which is also caused by the dog’s tongue purple. If the dog is also accompanied by shivering, then the situation may have been more serious and needs to be dealt with at the hospital to check if the body’s vital signs are good and for further examination. If you have oxygen at home, you can use it for your dog first.