Quick Care Checklist
- Watch for four general warning signs: low energy, appetite changes, elimination changes, and unusual behavior.
- Call an emergency clinic immediately if a deep-chested dog is bloating or retching without producing vomit.
- Seek vet care for vomiting or diarrhea lasting more than 24 hours, especially in puppies.
- Keep DHPP and rabies vaccines current; they protect against several common and deadly diseases.
- Use year-round heartworm prevention and test once a year.
- Schedule senior dogs for a vet checkup every 6 months.
- Never give human medication to a dog.
Four General Warning Signs
Dogs cannot tell you they feel sick. Watch for any of these changes:
| Warning sign | What it looks like |
|---|---|
| Low energy | Hiding, not greeting you, sleeping much more, or refusing walks. |
| Appetite changes | Refusing food or water, or suddenly drinking and eating much more. |
| Elimination changes | Diarrhea, blood, straining, frequent accidents, or difficulty urinating. |
| Behavior changes | Repeated licking, pacing, whining, aggression, or circling. |
Ten Serious Diseases at a Glance
Severity is rated from 1 to 5, with 5 meaning the disease is often fatal without treatment.
| Disease | Severity | Key signs | Prevention |
|---|---|---|---|
| Parvovirus | 5/5 | Severe vomiting, bloody diarrhea, fever, collapse; most dangerous in puppies. | DHPP vaccine |
| Distemper | 5/5 | Fever, discharge, coughing, twitching, seizures. | DHPP vaccine |
| Heartworm disease | 4/5 | Cough, tiredness, weight loss; advanced cases can be fatal. | Monthly prevention and yearly testing |
| Gastric dilatation-volvulus (bloat) | 5/5 | Distended belly, unproductive retching, restlessness, collapse; an emergency in deep-chested breeds. | Talk to your vet about gastropexy and feeding habits |
| Pancreatitis | 4/5 | Vomiting, belly pain, hunched posture, no appetite. | Avoid high-fat foods and table scraps |
| Chronic kidney disease | 4/5 | Drinking and urinating more, weight loss, vomiting, bad breath. | Senior bloodwork every 6 months |
| Diabetes | 3/5 | More drinking and urinating, weight loss with a big appetite, cataracts. | Weight control and regular exercise |
| Lyme disease | 3/5 | Fever, lameness that shifts between legs, low energy, poor appetite. | Tick prevention and Lyme vaccine in high-risk areas |
| Dental disease | 3/5 | Bad breath, red gums, drooling, dropping food; most dogs over 3 have some dental disease. | Brushing and veterinary dental care |
| Cancer | 4/5 | Lumps, weight loss, poor appetite, bleeding, lameness that does not improve. | Early detection with regular exams |
The DHPP vaccine covers parvovirus, distemper, adenovirus, and parainfluenza. See the Complete Dog Vaccination and Deworming Guide for the schedule.
Common Diseases by Age
Puppies, 0-12 months
- Parvovirus and distemper, both preventable with vaccines.
- Intestinal parasites and puppy diarrhea.
- Congenital issues such as heart murmurs or luxating patellas.
Young adults, 1-3 years
- Trauma from cars, fights, and falls.
- Swallowed foreign objects that cause blockages.
- Skin allergies and ear infections.
Adults, 3-7 years
- Dental disease and obesity.
- Pancreatitis from high-fat table scraps.
- Heartworm and tick-borne disease in some regions.
Seniors, 7 years and older
- Chronic kidney disease and diabetes.
- Arthritis that is easy to miss because dogs hide pain.
- Cancer, which becomes more common with age.
Three Emergencies That Need Immediate Care
1. Bloat in a deep-chested dog
If the belly is swollen and the dog retches without bringing anything up, looks restless, or collapses, it may have gastric dilatation-volvulus. This can be fatal within hours and needs emergency surgery.
2. Poisoning
Vomiting, drooling, tremors, collapse, or seizure after the dog ate chocolate, grapes, xylitol, or a household chemical means call your veterinarian or poison control immediately.
3. Vomiting or diarrhea for more than 24 hours
When it comes with lethargy, blood, refusal to eat or drink, or a puppy is involved, dehydration can develop quickly. Do not wait it out.
Common Mistakes
- Waiting to see if a bloated dog settles down on its own.
- Giving human medication such as ibuprofen to a dog.
- Skipping heartworm prevention because the dog is mostly indoors.
- Assuming senior thirst and weight loss are normal aging.
- Feeding table scraps that trigger pancreatitis.
- Ignoring a changing lump until it becomes hard to treat.
When to See a Veterinarian
Call your veterinarian or an emergency clinic if the dog is bloating and retching, has not eaten for more than 24 hours, vomits or has diarrhea for more than a day, seems very tired or painful, drinks and urinates much more than usual, or has a lump that is growing or changing. If you suspect poisoning, contact your vet or the ASPCA Animal Poison Control Center at 888-426-4435; see the Toxic Foods for Dogs guide for more. This reference is informational only and is not a substitute for professional veterinary advice.
FAQ
My dog vomited once. Is it an emergency?
A single episode with normal behavior is usually fine. Repeated vomiting, blood, lethargy, or a puppy involved needs veterinary attention.
What are the first signs of bloat?
A swollen belly, retching without producing vomit, restlessness, drooling, and collapse. Large, deep-chested breeds are at higher risk, and this is an emergency.
Do indoor dogs need heartworm prevention?
Yes. Mosquitoes get indoors, and heartworm is found in all 50 states, so veterinarians generally recommend year-round prevention.
How often should a senior dog see the vet?
Every 6 months is common, because bloodwork and weight checks catch kidney disease, diabetes, and cancer earlier.
What should I do if I suspect poisoning?
Call your veterinarian, an emergency clinic, or the ASPCA Animal Poison Control Center at 888-426-4435 right away. Do not induce vomiting unless told to.
Are lumps in dogs always cancer?
No, many lumps are harmless, but only a veterinarian can tell. A lump that grows, changes, or bleeds needs a fine needle aspirate or biopsy.
Content note
This guide is for general education. It does not represent a veterinary review or replace advice for your pet's individual situation.
