Experienced and professional animal trainer provide their insights in answering this question :
A. Your dog sounds like he has severe abdominal or back pain, from an injury or some kind of gastrointestinal upset. I recommend getting him in to see a vet or to the emergency clinic right away to determine the cause for his condition and get him started on treatment as well as pain relief.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

If your dog`s stomach feels abnormally hard, that could be a sign that they`re dealing with a stomach issue. Common stomach issues that cause a hard stomach include gastric dilation volvulus, peritonitis, and Cushing`s disease. If your dog`s stomach is hard, you should take them to the vet right away.
If your dog is yelping in pain randomly and shaking, it could be due to joint or muscle problems. This could be a sign of arthritis, a slipped disc, or other issues.
There are several possible reasons why your dog yelps when touched or cry out after being touched. It`s possible that your dog is suffering from some form of physical pain or stress. Meanwhile, it`s also likely that your dog is too excited or is seeking attention.
A health issue causing pain (i.e. illness or injury) can cause a sudden onset of touch sensitivity. Fearful or painful experiences can also cause a dog to develop touch sensitivity.
For the condition to truly be bloat and not weight gain, your dog`s stomach will be swollen and hard or have an unusual shape. If you notice this, call your veterinarian immediately. If it`s after hours, you should take him to the emergency vet. Bloat generally occurs when food or gas stretches the dog`s stomach.
Dogs who yelp frequently may also be in pain from an illness. They may have arthritis or another medical condition that contributes to chronic pain. Talk to your vet if you suspect your dog could be yelping from chronic pain or from an acute injury.
Fear and Anxiety

Our dogs can become upset, anxious, and even fearful just as easily as we can and sometimes this manifests as crying, shaking, and excessive vocalization.

Vomiting and diarrhea are common signs of an inflamed, irritated stomach and intestines, or gastrointestinal upset in dogs and puppies. Other signs that your dog has an upset stomach could include, licking lips or licking the air (sign of nausea), gulping (as a way to combat acid reflux), loss of appetite and lethargy.
Peritonitis is inflammation of the membrane that lines the inside of the abdominal cavity (peritoneum). It is a serious and often fatal condition in dogs, with mortality ranging from 50% to 70%. Peritonitis may be short or longterm, localized or widespread.
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.
The negative message could be a result of harsh handling and punishment, pain from a prior injury, or simply a lack of adequate handling and socialization when he was a pup. This is very different from operant conditioning, where the dog acts on the environment.
A hard stomach can happen for various reasons, including constipation, gastric cancer, and some chronic digestive conditions, such as irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD).
Most lumps are fatty tumors, though. These are benign, meaning not cancerous. Fewer than half of lumps and bumps you find on a dog are malignant, or cancerous. Still, they can look the same from the outside, so it`s hard to tell.
The most common clinical signs include nausea, vomiting, fever, lethargy, abdominal pain, diarrhea, and decreased appetite. During an attack, dogs may take a `praying position`, with their rear end up in the air and their front legs and head lowered onto the floor.
“To give the most accurate diagnosis possible, your veterinarian will also test for diseases that mimic pancreatitis, such as kidney disease and liver disease.” Steiner recommends giving pets with pancreatitis a low fat diet. This includes restricting animals from treats.
Why Dogs Yelp When Touched Or Moved. A dog that yelps without an obvious reason usually has neck or back pain. Almost all other causes of yelping show extra symptoms such as limping or a poor appetite. It`s hardest to tell spinal pain from abdominal pain.
Pain or Other Medical Problems

If your dog is whining more often only when she lays down, she may be dealing with joint pain or some other problem relating to her position. She may also have some trouble breathing while sleeping or any number of other problems contributing to the whining.

What are the typical signs of pain in dogs? General behaviour: Shaking, flattened ears, low posture, aggression, grumpy temperament, panting or crying, excessive licking or scratching a specific area, reluctant to play, interact or exercise, lameness (limping), stiffness after rest, loss of appetite.
Clinical signs typically include ataxia, paresis, and upper motor neuron urinary and/or fecal incontinence; pain is a less common feature.
A skeletal malocclusion results when an abnormal jaw length creates a malalignment of the teeth. A dental malocclusion, or malposition, occurs when the upper and lower jaw lengths are considered normal but there may be one or more teeth that are out of normal alignment (malpositioned tooth/teeth).
Some of the most common reasons for your dog`s shaking & shivering are cold, excitement, stress & anxiety, seeking attention, pain or illness, and old age. It`s important to recognize the difference between normal shaking vs. signs of a seizure.
Some of the signs of parvovirus include lethargy; loss of appetite; abdominal pain and bloating; fever or low body temperature (hypothermia); vomiting; and severe, often bloody, diarrhea. Persistent vomiting and diarrhea can cause rapid dehydration, and damage to the intestines and immune system can cause septic shock.
Dogs feel pain for many of the same reasons as humans: infections, dental problems, arthritis, bone disease and cancer. They also feel discomfort following surgical procedures. Unfortunately, unlike humans, they are unable to speak to us about when and where they hurt.
Believe it or not, dogs feel pain to a similar extent that humans do. In fact, dogs can handle similar intensities of all types of pain to humans.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. Extreme tenderness at even slightest touch, yelps in pain stomach seems to be very firm, rigid, body shaking
ANSWER : A. Your dog sounds like he has severe abdominal or back pain, from an injury or some kind of gastrointestinal upset. I recommend getting him in to see a vet or to the emergency clinic right away to determine the cause for his condition and get him started on treatment as well as pain relief.

Q. Shiba Inu. He periodically shakes and trembles, usually unrpovoked and seeming for no reason. Usually cuddling helps but not always. Becomes reclusive
ANSWER : A. I do find that Shiba Inu’s are a really sensitive breed. I think the first thing to rule out is pain. That could be pain from a muscle injury or even gastrointestinal pain. Try to pinpoint whether it occurs after a meal or not. He might be painful due to something going on in his GI tract, and the pain is at its worse after he eats.

I’ve also seen a lot of small breeds like Shibas get back pain, and shaking can definitely accompany that as well. If you haven’t see your vet who can perform a good physical exam and look for any signs of muscular pain along the spine or elsewhere. It’s not a bad idea at this point to consider doing some blood work just to screen for any problems that could be affecting organ function, for example.

If he’s healthy otherwise, I think it’s likely that there’s something that’s scaring him at home. These things can be really difficult to identify, and you have to be really aware and note exactly when the shaking occurs, how long it lasts, etc, and look for patterns. Dogs can hear things we can’t, and he may be hearing things you’re missing, and the noise is disturbing to him. Cuddling is a good idea, also working to distract him and desensitize him with toys and treats might help. But like I said above – definitely rule out pain first.

Q. Which common foods are poisonous to pets?
ANSWER : A. That’s a great question. As responsible pet owners we need to be aware of food items that can be harmful to our canine or feline companions. Here are some of the most common foods proven to cause illness in our animals at home:

Chocolate: A favorite and irresistible treat amongst most humans, chocolate is considered toxic to dogs. In very small amounts it is usually not a huge issue, but with larger volumes and with darker chocolates pet owners should be concerned. Chocolate contains methylxanthine theobromine, which is similar to caffeine. Chocolate ingestion can cause vomiting, diarrhea, hyperactivity, issues with normal heartbeats, seizures, and in some severe cases, death. It is best to keep your favorite chocolate treats in a good hiding spot and out of reach of your dog or cat.

Grapes and raisins: Dogs should not consume grapes and raisins because of the risk of acute kidney failure. Most dogs experiencing grape or raisin toxicity will begin to have vomiting and/or diarrhea within 6-12 hours of ingestion. Other abnormal clinical signs include lethargy, abdominal pain, dehydration, and tremors. Kidney failure develops within 24-72 hours of the initial ingestion. There are some dogs that do not experience these devastating side effects. It is best to contact your veterinarian or veterinary emergency facility if you believe your pet has ingested grapes or raisins.

Garlic and onions: We often forget that our meals contain these two popular ingredients and will allow our furry companions a few bites or licks. Onion and garlic both can cause a type of poisoning that results in damage to red blood cells, making them more likely to rupture. They can also cause stomach upset and mouth irritation. Look for pale gums, increased breathing or drooling or any vomiting or diarrhea.

Bread dough: Unbaked bread dough is considered poisonous to our pets. The bread dough, when ingested, expands in the stomach because of the warm and moist environment. This can lead to a bloated or even twisted stomach. In addition yeast is often added to our baking products to help get bread to rise, and when this yeast is fermented it produces both carbon dioxide and alcohol. The alcohol produced can be absorbed into the bloodstream and causes dangerous drops in blood sugar, blood pressure and body temperature. Common clinical signs include vomiting or retching, distension of the stomach, weakness and collapse.

Macadamia nuts: Ingestion of these nuts are not proven to be fatal in dogs but can cause them to experience uncomfortable clinical sings, including fever, joint stiffness, vomiting, tremors and difficulty walking, especially in their hind legs. Often your pet will start to feel better after about 48 hours, but supportive veterinary care (such as pain medication) may help ease their discomfort.

Xylitol: The most common ingredient used in sugar-free gum is xylitol, which is a non-caloric sweetener. It is also found in some oral rinses, toothpastes and vitamins. Xylitol and dogs do not mix – it can cause a dangerous drop in blood sugars levels. Dogs will often display signs of disorientation, black tarry stool, tremors and seizures. If severe enough some dogs have developed liver failure. Keep your gum away from your canine companion.

Avocados: Avocados are not actually poisonous to dogs or cats but as many veterinarians can tell you the avocado pits can cause a foreign body obstruction. Avocados contain persin, which is actually toxic to the majority of pet birds. The abnormal clinical signs associated with avocado ingestion in birds include, respiratory distress, inability to perch, liver and kidney failure and sudden death.

Go forth and enjoy your favorite foods, but keep in mind which foods you should avoid sharing with your furry family members. Whenever in doubt, contact your veterinarian for healthy and safe food suggestions.

Q. My cat threw up last night and is now sensitive and making pain noises, stomach is large and is moving slowly. What’s wrong?
ANSWER : A. If your cat is vomiting and appears to have a painful abdomen. (Vocalized when touched on the abdomen, or hunches and arches his back when walking) it may indicate a problem with his digestive tract. Foreign bodies such as string or hair, digestive upset, or illness and even disease can all cause the abdomen to become painful.

Additional symptoms may include continued vomiting or diarrhea, or blood visible in either one. Since your cat’s abdomen is painful, it is best to make an appointment with your local vet to rule out any serious issues such as a foreign body or illness.

Q. My 13 yr old male indoor cat displays tenderness to touch in his sides/haunches and it is increasing. Recently put him on diet for arthritis.
ANSWER : A. While tenderness in the back and hips can indicate arthritis pain, it can also sometimes indicate pain internally such as stomach or other organ issues. Cats and other pets will often stiffen their backs to protect the abdomen when in pain. If the pain continues or your cat is still in pain with arthritis treatment it is best to schedule a checkup with your vet to make sure there is not another source for the issue.

Read Full Q/A … : Vetinfo

Q. 12 yr old female black Lab in pain, won’t eat. Can barely walk/sit, rear thighs swollen. Told by vet rotting stomach tissue. Antibiotics didn’t help
ANSWER : A. If your dog is still experiencing the large amount of symptoms listed after care, it may be a good idea to seek a second opinion with another vet, or ask for further testing. The stomach is a necessary part of the body and problems with it such as necrotic tissue can be life-threatening.

Stomach problems do not usually lead to pain in the hind leg, and swelling of the legs or limbs may indicate an injury there instead. Pain in the body can cause pets to become nauseated or ill, which can lead to a loss of appetite, vomiting or lethargy from lack of eating.

Until you can get back to the vet, a bland diet of plain boiled chicken and plain white rice may help to soothe minor digestive upset and encourage some eating. However, due to the large amount of symptoms listed, seeking further veterinary care is best.

Q. How do I know if my pet is overweight?
ANSWER : A. There are many ways to determine if your pet is overweight: breed standards, body condition score (BCS), body fat index (BFI), and morphometric measurements. These tools are used to determine how overweight a pet is, as well as to determine how much to feed to reach the pet’s ideal weight. Most weight loss programs fail because food dose calculations are based on inaccurate estimations of ideal body weight.

Current methods of estimating ideal body weight (body condition score/ guessing) are most likely to underestimate % body fat and therefore overestimate ideal weight, which leads to overfeeding. Pets are being overdosed on food because of inaccurate estimations of ideal body weight.

To determine body condition score it’s often helpful to have a scale from 1-5 to compare to: http://www.hillspet.com/weight-management/pet-weight-score.html. This scale is based on your ability to feel or see the ribs, the size of your dog or cat’s waist, and the appearance of the abdomen.

An overweight animal can be predisposed to several health conditions including high blood pressure, arthritis, endocrine disorders such as diabetes, and hypothyroidism. This is why it is important to determine an ideal weight for your pet and work hard to maintain a healthy weight.

Q. Dog was fine last night. This morning she did not go poop. Felt her, her stomach felt hard and she yelped. I think she conspated.
ANSWER : A. Dogs can definitely get constipated, although its kind of uncommon. You can add some fiber to her diet in the form of some canned pumpkin (1 – 2 tablespoons on top of food at every meal) or some boiled white rice with no seasonings. I’d be watching her very closely for signs of other problems, though – lack of appetite, vomiting, diarrhea, skeletal pain (like in the back or hips). This sounds like a painful condition if she yelped when you touched her. If she’s not seeming normal today I would take her in to the vet for an assessment, and to figure out where the problem is.

Read Full Q/A … : Causes of Limping in Dogs