When we or our family members feel uncomfortable, we can judge whether we need to rest, take medicine, or go to the hospital.

However, when a dog feels uncomfortable, it is difficult for us to decide whether we can wait or see a pet doctor? Most people can only rely on their "sixth sense" to determine the severity of a pet's health condition.

Sometimes your pet’s symptoms are mild and transient, and sometimes they are life-threatening emergencies. Not being able to communicate directly with your pet makes this decision particularly difficult.

Then we must first clarify where the “bottom line” is. The following symptoms are relatively dangerous situations. If you encounter the following problems, it is a clear signal that you need to take your dog to the hospital. 10 Biggest Dog Health Warning Signs:

1. Difficulty breathing

When your pet becomes difficult to breathe or short of breath, you need to contact your pet doctor as soon as possible. Trouble breathing may mean that not enough oxygen is reaching your dog's body tissues. Pets with heart disease may not be able to pump enough blood to their muscles and other tissues. Dyspnea often accompanies fluid accumulation in the lungs or chest, causing shortness of breath and coughing. If your dog suddenly develops breathing problems, you should take him to your veterinarian immediately.

　2. Cough

When a dog coughs, there is usually an underlying health problem. Possible causes include airway obstruction, kennel cough, asthma, bronchitis, pneumonia, heart failure and lung tumors. All types of cough require medical attention to determine the cause and treat it.

3. Fever

If your dog's temperature is elevated, it usually means his body is fighting an infection.

4. Extremely tired

When your pet appears lethargic, sluggish or listless, and responds slowly to sounds and other stimuli in the environment, this is a sign of dog fatigue. Extraordinary fatigue can be a sign of a number of potential underlying conditions, including some that are serious or even life-threatening. If your dog is lethargic for more than 24 hours, it's time to see your veterinarian.

5. Poor urination

Poor urination includes discomfort in urination, inability to urinate, and frequent urination. If your dog shows discomfort urinating or licks the urinating area excessively, you should see your veterinarian as soon as possible. There are several potential causes of urinary difficulty, some of which can lead to death.

6. Blood in defecation, urine or vomiting

The presence of fresh blood in your dog's stool indicates bleeding in the colon or rectum, while upper gastrointestinal bleeding can produce dark red stool. Both cases require a visit to a doctor. The urine contains blood, which will be more obvious. There are many serious conditions that can cause hematuria, including urinary tract obstruction, bacterial infections, and even cancer. Vomiting blood may be bright red (fresh) or may look like coffee grounds (partially digested blood). There are a number of reasons why a dog may vomit blood, some of which can be very serious.

7. Loss of appetite

Often, a loss of appetite is the first sign of an underlying illness in your pet. There are many reasons why a dog may have a loss of appetite or not eat, but not eating for 24 hours can have a negative impact on his health. This problem is even more serious for puppies under 6 months old.

8. Pacing, irritable or retching

When your dog is pacing back and forth, appears agitated, or is unwilling to settle down and rest, it is a sign that he is in pain. One very serious condition includes gastric volvulus (GDV), a life-threatening disease most common in large breeds and deep-chested dogs.

9. Red eyes

Red eyes in dogs are usually a sign of inflammation or infection. Diseases include third eyelid abnormalities, conjunctivitis, keratitis, etc. Certain diseases of the eyes can cause blindness, so any significant changes in your pet's eyes should be a cause for concern.

10, fainted

When a dog suddenly loses consciousness, faints, and is unable to stand up, even if the dog recovers immediately after fainting and looks normal, he or she needs to see a veterinarian immediately. Causes of fainting include underlying problems with the nervous system (brain, spinal cord, or nerves), musculoskeletal system (bones, joints, or muscles), circulatory system (heart, blood vessels, or blood), or respiratory system (mouth, nose, throat, or lungs) .

The 10 symptoms listed above may all be potential serious health problems, or even life and health risks, so owners need to pay special attention to prevent their pets from developing serious health problems.