Experienced and professional animal trainer provide their insights in answering this question :
A. You need to monitor your cat’s and try to find out which one has the problem so separate them and have a litter tray for each one. If you notice that any of them have any behavioural changes too such as lethargy then it is probably a good chance that is the one with the problem and then you can seek veterinary treatment for that cat.

How to Identify Common Pet Problems ?

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Additionally, it`s easy to get concerned if you see both blood and mucus in cat stool. A little mucus in poo is normal, as it`s an intestinal lubricant. However, any more than usual combined with blood means kitty needs to see the vet soon.
In cats, some of the most common causes of throwing up blood include: Prolonged or severe vomiting of any cause that is left untreated. Significant vomiting can result in inflammation of the stomach, upper intestines, or esophagus that may lead to bleeding. Intestinal parasites like roundworm.
What causes the regurgitated fluid to be pink? The most common culprit is blood. Sometimes, your cat may also have eaten fabrics or colored yarn that released color while inside your kitty.
If blood in your cat`s vomit is bright red, it is fresh and may have been caused by external trauma to the esophagus, such as swallowing a foreign object, or an oral condition. Darker blood may indicate issues lower in the digestive tract.
The most common symptoms of toxoplasmosis include fever, loss of appetite, and lethargy. Other symptoms may occur depending upon whether the infection is acute or chronic, and the location of the parasite in the body.
Emily Singler, VMD, Fetch by The Dodo`s on-staff veterinarian, shares that it can have a pink or brown hue or you might even see clumps of blood in what otherwise looks like healthy-looking urine. “Blood in a cat`s urine can make the urine look bright red if there is a lot of it,” Dr. Singler adds.
Dark, tarry or coffee ground-like bits in vomit can indicate partially digested blood, and that means a visit to the veterinarian. If cat vomit is yellow or pale green, that could be bile and indicate an underlying disease or condition. “It stains and is hard to get out of the carpet,” Ward says.
Yellow or White Cat Vomit That`s Clear or Foamy Means an Empty Stomach. If your cat coughs up a substance that is clear or foamy and white, it`s likely just coming from their esophagus and an empty stomach. They aren`t coughing up anything they consumed, simply the mucus and water that exists in their body already.
Red or Pink Vomit

Red or bloody vomiting is also called hematemesis. It usually appears pink to bright red, and in some cases, it may also look dark brown or black. A person should immediately consult a doctor if they experience pink, red, or bloody vomit.

It is unlikely that you would be exposed to the parasite by touching an infected cat because cats usually do not carry the parasite on their fur. In addition, cats kept indoors (that do not hunt prey or are not fed raw meat) are not likely to be infected with Toxoplasma.
Feline hemotropic mycoplasmosis (FHM) is the name of a relatively uncommon infection of cats. In the past, this disease was called feline infectious anemia or hemobartonellosis. With this disease, the cat`s red blood cells are infected by a microscopic bacterial parasite.
Feline Vaginal Discharge

Vaginal discharge may be clear and watery (serous), bloody, thick and gray (mucousy), yellow/green (purulent), or dark green/black (after giving birth). The discharge may or may not have an odor. In many cats, licking at the vulva may also be noted.

Because blood traveling from the lungs to the body usually contains lots of oxygen, blood in the arteries is normally red. Much of the oxygen is removed from the small capillaries by the body tissues, so blood in the veins tends to be blue in color.
It may be fresh and bright red, or older, darker and coagulated, like coffee grounds. Hematemesis is a sign of internal bleeding from the upper portion of your digestive tract — the esophagus, stomach and first portion of your small intestine called the duodenum.
Orange. What it means: Cat vomiting orange could be a sign of liver disease or pancreatitis; Treatment: If your cat is vomiting orange liquid frequently, take them to the vet for an examination.
Remember: The color of the blood may range from red to brown to black. Contact 911 or local emergency services if your bloody vomit is accompanied by dizziness, rapid or shallow breathing, or other symptoms of shock. Green or yellow vomit may also be a symptom of a more serious condition, such as bile reflux.
Yellow vomit: This is bile and can be a sign of liver disease, but it often occurs with an empty stomach. It can also mean the cat ate something yellow. Clear vomit: This can be regurgitation from the esophagus or from an empty stomach.
Bile or yellow/foamy appearance: This type of vomit could be caused by a hairball, but it also can point to a kidney problem, infection, or endocrine issue. If this type of vomiting occurs frequently, a vet visit is also recommended.
Causes of Your Cat Vomiting up Brown Liquid

This could be the result of something like a foreign body ingestion or a large hairball impaction that is blocking the intestines and creating inflammation and trauma. Brown Bile: Sometimes brown liquid vomit can be bile from your cat`s liver.

Throwing up bile may not require medical attention if it has a clear cause and resolves with conservative methods, such as rest and rehydration. However, anyone who is persistently throwing up bile should see a doctor. Anyone who is throwing up bile and has indications of bile reflux should see their doctor.
Stomach acid, or gastric acid, is a watery, colorless fluid that`s produced by your stomach`s lining. It`s highly acidic and helps break down food for easier digestion. This helps your body absorb nutrients more easily as food moves through your digestive tract.
Possible causes of a cat vomiting blood include:

Foreign matter in the intestinal tract, including hairballs. Parasites, such as heartworms. Other medical issues, such as kidney or liver disease. Stomach ulcers.

The causes of blood in their stool can vary widely and might result from milder issues like stress, intestinal parasites or dietary intolerances. However, more serious causes can include intestinal inflammatory conditions or other underlying health problems.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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. Multi-cat home. Found reddish mucus in litterbox & yellow vomit on sheets. After hours. What to do?
ANSWER : A. You need to monitor your cat’s and try to find out which one has the problem so separate them and have a litter tray for each one. If you notice that any of them have any behavioural changes too such as lethargy then it is probably a good chance that is the one with the problem and then you can seek veterinary treatment for that cat.

Q. My puppy is throwing up her food this morning and yellow foamy stuff. Please help!
ANSWER : A. If the vomiting has only occurred once, it may be due to the fact that there was something causing a minor upset stomach in your pup. Yellow foam is often acid, and tummies that are upset or that have been empty for too long can cause this to appear in vomit. It may just be that your puppy needs an extra meal in the day to help keep her stomach happy. Eating a meal too quickly can also cause a pup to vomit up undigested food and foam, and feeding smaller meals more often, or slowing down your dog’s eating can help.

If the vomiting has only happened once, pick up your puppy’s food for an hour or two and then offer a bland meal of plain boiled chicken and plain rice. These bland ingredients can help settle upset stomachs while being enticing “people food”. If the vomiting does not occur again, you can return to a normal feeding schedule.

However, if the vomiting continues, worsens, or new symptoms appear along with it, then it is a good idea to schedule an appointment with your vet to rule out any more serious causes.

Q. Nursing dog pups 13 days old has sudden onset of diarrhea and vomiting what can I do
ANSWER : A. You can try with holding food for 12 hours. Offer unflavored Pedialyte if she’ll drink. If she doesn’t vomit or have diarrhea for those 12 hours you can then offer small amounts of a bland diet such as boiled white meat chicken (25%) and boiled white rice (75%) without flavoring or fat added. Offer about 1/4 cup every 2 hours. If she continues to do well and has an appetite do this for 12 hours, then transition back to a normal diet slowly. If she continues to have vomiting or diarrhea I think it’s important that you seek veterinary care, since continual loss of fluid through vomiting and diarrhea while nursing is very dangerous to any dog, but especially to a very small dog like a chihuahua.

Q. My dog is vomiting clear white mucus. It’s day after Christmas. He has thrown up about three times during the night. Can you help. Thanks A. G
ANSWER : A. If your dog’s general appearance is otherwise normal – active, alert, no diarrhea – you can withhold food for 12 hours. If no more vomiting, start feeding small/frequent amounts of a bland diet, like boiled white meat chicken and boiled white rice – 25% chicken, 75% rice. Feed very small amounts to start, like 1/4 cup. Feed every 2 hours, and continue if no more vomiting. Transition back to a normal diet after 12 hours.

If at any time your dog continues to be sick – more vomiting, can’t hold down water, lethargy, etc. – seek emergency veterinary care.

Q. Dog throwing up white mucus with white bits
ANSWER : A. If he has only vomited once or twice, I recommend withholding food for 12-24 hours. This will give the gut a chance to rest. Let her have water, ice cubes to lick if she seems to want to gulp the water. After 12-24 hours, give her a tiny amount of her regular food, and wait for 30 minutes. If she eats it and it stays down, repeat the small amount. If all continues to go well, keep feeding her very small amounts until she has had her normal ration. If, however, she does not want to eat, continues to vomit, develops a fever and/or lethargy, get her in to see your vet or to an emergency clinic right away.

If he has been vomiting multiple times over several hours, he should be seen by a vet as soon as possible. Continued vomiting is very concerning and can lead to dehydration and electrolyte imbalance as well as low blood sugar. He might have eaten something that either disagreed with him or something that has gotten stuck somewhere in his gastrointestinal tract. He could be sore from a hidden injury you are unaware of, he could have been exposed to some sort of toxin or irritant in his environment or this could be early signs of another condition or disease process.

Q. My Rottweiler mix vomits once pe day. He may vomit undigested food 8 hours after breakfast. The vomit is a pale yellow . He is 10 years old.
ANSWER : A. There must be an underlying reason why he is vomiting regularly and why his food is still undigested 8 hours later. It is worth seeing your vet for further investigation especially considering his age. They may want to do blood tests or xrays.

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Q. Great Dane, Lab mix is vomiting, lethargic, bloodshot droopy eyes. No appetite. What’s wrong?
ANSWER : A. Vomiting is a common symptom of many illnesses which can range anywhere from minor digestive upset, to mores serious problems such as disease, illness or even bloat.

If your Dane Mix has only vomited once or twice, it may just indicate a minor stomach upset. Picking up food for a few hours then feeding a bland meal of boiled chicken and plain rice can help soothe the stomach and entice eating. However, if the vomiting continues or symptoms persist for more than a day, it may indicate something more serious going on and should be looked at by your vet.

Large and giant breed dogs are more prone to a condition called Bloat, which is considered a medical emergency. Signs of bloat in a dog include a large distended abdomen, pain in the abdomen, signs of distress such as heavy panting, pale gums or tongue, vomiting and diarrhea, or attempting to vomit or defecate without success. If you suspect your dog may be experiencing bloat, contacting your vet or emergency clinic immediately is best.