Other common symptoms include pale gums, vomiting, blood in the urine, changes in urination patterns, or sudden weight loss. (harborpinesveterinarycenter.com)
As the problem progresses, your dog may go into shock, with pale gums and tongue, rapid heart rate, weak pulse, problems breathing and collapse. (vetbabble.com)
A physical examination identifies any deviations from normal, such as pale gums or weight loss which require further testing, like blood counts or x-rays. (amcny.org)