Is your dog acting differently, or did you notice a symptom you can’t explain? This page brings together our guides to common dog symptoms in one place, organized by body area, so you can quickly find the one that matches what you are seeing.
Each guide explains common possible causes, the warning signs that need a veterinarian, and what you can safely watch for at home. If you are not sure where to start, try our free Pet Symptom Checker, which lets you search by symptom.
When to Call the Vet Right Away
Some signs should never wait for an online guide. Contact a veterinarian or an emergency animal hospital immediately if your dog has trouble breathing, collapses, has a seizure, has a swollen or hard belly, shows signs of severe pain, is bleeding heavily, or may have eaten something toxic.
Digestion and Appetite
- Why Is My Dog Vomiting?
- Why Does My Dog Have Diarrhea?
- Dog Bloody Stool: Causes and Warning Signs
- Why Is My Dog Not Eating?
Mouth and Breath
Skin, Coat and Ears
- Why Is My Dog Scratching So Much?
- Why Is My Dog Losing Hair?
- Smelly Dog Ears: Causes and Warning Signs
- Dog Shaking Head? Common Causes
Eyes and Face
Breathing
Urine and Thirst
Movement and Energy
- Why Is My Dog Limping?
- Why Is My Dog Having Trouble Walking?
- Why Is My Dog Weak?
- What Is Dog Lethargy?
- Why Is My Dog Sleeping So Much?
- Why Is My Dog Shaking?
- Why Is My Dog Walking in Circles?
Behavior Changes
- Why Is My Dog Anxious All of a Sudden?
- Why Is My Dog Whining?
- Why Is My Dog Hiding Under the Bed?
- Why Is My Dog Acting Strange All of a Sudden?
- Why Does My Dog Follow Me Around the House?
About These Guides
TechHavela’s symptom guides are written for dog owners and are based on information from veterinary sources such as the Merck Veterinary Manual, VCA Animal Hospitals, and university veterinary programs. They are educational only and do not replace an examination, diagnosis, or treatment by a licensed veterinarian.
Looking for cat symptoms? Our cat symptom guides are on the way.