Dogs need food and water to survive. However, if they are otherwise well, they can survive for around 5 days without food, as long as they are drinking. It's true that dogs have survived for much longer periods without food, but there is a great risk of irreversible damage to their organs and tissues, or death.
How Long Can a Dog Go Without Food? Dogs can usually go three to five days without food, however, this is not ideal. If your dog has gone two days without food, it is highly recommended you call a veterinarian if you haven't already. More important than your dog eating is their water intake.
If your dog isn't eating, consult a vet within 8-12 hours if there is any accompanying vomiting or diarrhea. Absent these symptoms, there's a few likely reasons your dog isn't eating, including emotional issues.
For feeding a sick dog that won't eat, most vets recommend bland chicken with white rice or white meat from a rotisserie chicken. Other options are sweet potatoes, unseasoned pumpkin (not pumpkin pie filling!), bone broth, and meat-based baby food. Lastly, you can try hand-feeding your sick dog.
Firstly, it's worth saying that loss of appetite is one of the most common signs of illness, so if your dog hasn't eaten for 24 hours, then it's best to call your vet, especially if there are any other troubling signs, like diarrhea or lethargy.
If your dog hasn't eaten in over 12 hours with no obvious cause or is exhibiting any other symptoms such as vomiting, diarrhea, or lethargy this may be an emergency and you should call or bring your dog in for emergency care as soon as possible.
Gastrointestinal upset
Undoubtedly the most common reason for poor appetite due to the scavenging nature of our canine friends, inappetence can be the first sign of an upset stomach. Monitoring for any vomiting, diarrhoea and lethargy, and switching them to a bland diet is advisable in this instance.
You definitely shouldn't wait longer than a couple of days to contact your vet clinic if your dog isn't eating anything at all. Dogs can survive up to 5 days or even longer, but as time goes on, the chances of long-term damage to their organs or even death increase.
Bone broth is a very mild, liquid meal that sits easily in upset canine stomachs. It is also a nutritious and delicious way to add moisture and flavor to dry food and encourage dogs with reduced appetites to eat.
Chronic illness may cause dogs to stop eating but continue drinking. If your dog is avoiding food but is drinking excessive amounts of water—much more than is normal for him—this is a telltale sign that he has develop diabetes. Take him to the vet for a diagnosis and to find out more about his options.
An initial loss of body fat is followed by muscle loss and atrophy and, ultimately, organ failure. In long-term starvation, degeneration of the liver, cardiac changes, anemia, and skin lesions may develop.
Dogs may go off their food because of changes in their environment, stress, an adverse reaction to drugs, and nausea. Dental problems, pain and internal obstructions can also cause dogs to lose their appetite.
Your dog may not eat for many reasons: if they're in pain; are feeling anxious or stressed; if they're unwell; feel nauseous; if they have side effects from medication; and sometimes simply because they don't like the food you've given them.
The clinical signs of more advanced kidney failure include loss of appetite, lethargy, vomiting, diarrhea, and very bad breath. Occasionally, ulcers will be found in the mouth.
Sick dogs need a lot of sleep and rest. Provide a quiet and comfortable place for your dog to relax that is free of disturbances, including other pets or young children who may be a bother. You may want to keep your sick dog in a private room or separate area of the house to ensure that they are left alone.
An emaciated dog is best served consuming a small meal every six hours (4 times a day) rather than consuming one or two larger meals. A broad-spectrum vitamin and mineral supplement is important to include at each meal. Some evidence supports the addition of the amino acid glutamine to the recovery diet.
3. Do consider adding water to dry kibble. There are plenty of dogs and cats that love their dry kibble. But if your pet has begun showing less interest in the food, it may be time to add a little "gravy." It's real simple, too.
That said, most healthy dogs will be able to survive for about 3 to 5 days without eating food. However, dogs who are underweight, sick, very old, or very young, may not be able to last quite so long and require veterinary care sooner than the 3- to 5-day guideline.
A decline in appetite could be a sign of a significant illness such as kidney disease, liver disease, diabetes, infection (bacterial or viral), fever, cancer, pyometra (infection of the womb), pain (anywhere in the body, not just the mouth), gastroenteritis etc.
Although a loss of appetite in dogs doesn't necessarily indicate serious disease, prompt veterinary attention is important because it could be a sign of significant illness, including cancer, various systemic infections, pain, liver problems, and kidney failure.
Healthy adult dogs can go anywhere from three to five days without food as long as they're still drinking water. But that doesn't mean you should wait that long to contact your veterinarian. If your pup has gone longer than 48 hours without eating anything, you should call your vet.