Experienced and professional animal trainer provide their insights in answering this question :
A. It is not highly contagious but cats with weak immune system or ones that carry the coronovirus, or cats kept in multicat environments are more likely to contract the virus.

How to Identify Common Pet Problems ?

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

Is FIP in cats contagious to other cats. No, the mutated FIP virus is not contagious to other cats.
Although the effusive form of FIP is often rapidly fatal, some cats can live longer than one might imagine (weeks or months) with supportive care. Pulmonary fluids need to be drained, but abdominal fluids typically should not be drained. Cats with the dry form may stay alive for months or more.
Feline infectious peritonitis (FIP) is a common disease and a frequent reason for referral; approximately 1 of every 200 new feline cases presented to American veterinary teaching hospitals represents a cat with FIP [1]. It is also a major factor in kitten mortality [2].
The vaccine has not been shown to reduce the incidence of clinical FIP when used in endemic catteries when the vaccine is routinely given to kittens at least 16 weeks of age.
FIP prognosis is grave: over 90 percent of cats with FIP will die from the disease. Affected cats usually do not live more than a few weeks after diagnosis, so there is little possibility for long-term care.
Except in rare cases, wet FIP is fatal within about five weeks of diagnosis. The dry form is equally deadly but affected cats may survive for a few months.
Feline infectious peritonitis (FIP) caused by feline coronavirus (FCoV) is a common dis-ease in cats, fatal if untreated, and no effective treatment is currently legally available.
Feline infectious peritonitis (FIP) is a painful, incurable disease that`s nearly always fatal.
Supportive care will prolong life, and some cats with FIP can live in a state of chronic disease for weeks, months, or, rarely, a year or more.
They may have lethargy and weight loss, wobbliness, and breathing problems. Sometimes cats with FIP symptoms eat normally and have normal energy levels, making early diagnosis very difficult. In the final stages of FIP, cats struggle to breathe and eat, often resulting in euthanasia.
It is believed that cats of a younger age are more susceptible to FIP development, as well as certain breeds such as the Abyssinian, Bengal, Birman, Himalayan, Ragdoll, and Devon Rex.
Incubation and Onset of Feline Infectious Peritonitis

The natural incubation period is extremely variable, ranging from a few weeks to several years. Cats are at greatest risk for developing FIP within the first 6 to 18 months after initial infection with FCoV.

However, some of the pathogenic and immunopathogenic events that are well known in cats FIP seem to be present also in people with COVID‐19. Moreover, preventive measures currently recommended to prevent SARS‐CoV‐2 spreading have been shown to allow eradication of FIP in feline households.
Offer FIP-positive cats their favorite food or treats to encourage them to eat. Try to minimize stressful situations, keep them indoors, warm and comfortable, with their litter box, fresh water, and food nearby. Veterinarians may prescribe medications but understand that these medications often only help temporarily.
Cats with FIV often have similar life spans to cats without it: Studies conducted in 2010 and 2022 found that an FIV diagnosis wasn`t associated with decreased lifespans. In fact, cats can remain asymptomatic for years or even their entire lives.
FIP is often nicknamed the purring disease, because infected kittens will spend so much time snuggling and purring – perhaps because they are feverish and are struggling to stay warm. Even though scientists and veterinarians have known about FIP since the 1960s, there is still neither prevention nor cure.
What are the symptoms of FIP? Cats that have been initially exposed to FeCV usually show no obvious symptoms. Some cats may show mild upper respiratory symptoms such as sneezing, watery eyes, and nasal discharge, while others may experience mild gastrointestinal signs such as diarrhea.
FCoV can be killed by most household disinfectants, such as bleach (Addie et al., 2009). Therefore, after the death of a cat to FIP, the litter tray can be disinfected using bleach, and soft furnishings can be steam-cleaned. To be 100% sure that all coronavirus has gone, wait 2 months before obtaining another cat.
Accordingly, results indicated that parameters associated with FIV disease progression are directly linked to aggression.
Cats with FIP treated with remdesivir typically improve clinically over the first 2-3 days. The anecdotal evidence of cats treated with remdesivir and GS-441524 says that around 80-95% of cats are successfully treated. It is still too early to know how many will recur.
Including all cats, the success rate was still around 80%. These cure rates are staggeringly high and seem a miracle for a disease that was once almost 100% fatal. However, it is important not to rush to conclusions and there is a lot to consider for pet owners wishing to pursue treatment.
Relapses of FIP during the 12-week post-treatment observation period do occur and there is no simple blood test to predict when a cure has occurred, or a relapse is possible.
Clinical signs of FIP include:

Chronic weight loss or weight gain (seen more with dry FIP) A pot-bellied appearance (from wet FIP) due to fluid accumulation in the abdomen; typically the fluid is a straw-colored, thick, high-protein fluid.

​Feline Viral Diseases: FIP, FeLV, and FIV

The three major feline viral diseases are feline infectious peritonitis (FIP), feline leukemia virus (FeLV), and feline immunodeficiency virus (FIV). These viruses are specific to cats and cannot be transmitted to humans or other animals.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. My cat has been running a low grade fever off an on for several weeks and I treated with onsior then it disappeared. What are the chances it is FIP?
ANSWER : A. Generally, FIP is not a very common condition and you should suspect other causes of fever. Diagnosis of FIP is difficult but you can do a blood test to find out if your cat was in contact with this virus (it does not confirm FIP thought). FIP usually affects cats younger that 1 year of age.

Read Full Q/A … : Vetinfo

Q. My nephews kitten has fip and he comes to my house after petting his kitten and then comes into contact with my older cats. Can they get it from him
ANSWER : A. No, it’s unlikely. FIP is a very unusual disease, and while cats can pass the virus that causes it (a corona virus) between them something has to occur in the cat’s body for them to then become sick from it. The virus undergoes a mutation and then the cat becomes sick from it. But many cats have the virus in their bodies and never become sick.

And without direct contact between the FIP kitten and your cats, there’s no way it could be transmitted. It is passed thorough direct contact with feces or saliva, or cross-placentally (from the mother to the kittens in utero)

Q. I believe my dog has mites, are they contagious?
ANSWER : A. Parasites like Sarcpotes Scabiei (also called burrowing mites), Otodectes Cynotis (ear mites) and Cheyletiella (walking dandruff) are very contagious between dogs.

Pets diagnosed with one of these parasites should be separated from other dogs until treatment is finished. Sarcoptes Scabiei can also be passed on to humans.

Demodex Canis, another common skin parasite, is not contagious to human or healthy dogs but may be dangerous to dogs with compromised immune systems.

Read Full Q/A … : Cure Mange

Q. Is fip contagious??
ANSWER : A. It is not highly contagious but cats with weak immune system or ones that carry the coronovirus, or cats kept in multicat environments are more likely to contract the virus.

Q. Can these warts be contagious to humans? Also the papillomavirus can it be contagious to humans?
Thank you for your answers.
Kathy Williams
ANSWER : A. Papillomaviruses are dangerous only for a certain species ( like horses, dogs ). Warts can be caused by many things ( allergy, infection, parasite) some of them can be contagious. See your vet to check what is going on and get some more info.

Q. I have 6 cats, my 2 black, male, cats have small eruptions on the furry bridge area above & to the side of the nose. They dry and form crust scabs.
ANSWER : A. I do agree with the answer below that any time more than one animal in a household is affected with a skin condition we have to rule out contagious disease – even if not every animal in the house in infected. The changes you are describing to your cats’ noses definitely sound compatible with infectious diseases like ringworm and mites (mange). However, if your cats stay indoors and don’t have contact with cats outside of your other cats, and if none of your cats (not just the infected ones) came from a shelter recently it’s probably not something contagious.

I will add that I have seen non-affected cats that carry ringworm and pass it to other animals in the household, so if you have any new cats check for ringworm.

Once infectious causes have been ruled out you can think about strange things, like immune-mediated skin disease (lupus) and solar dermatitis. Diagnosing what exactly is causing the problem and how to treat it may require taking a biopsy from one or preferably both cats.

Q. How do I know if my dog has mange or just a mild skin infection and is it contagious?
ANSWER : A. Some kinds of mange (sarcoptic but not Demodex) are also contagious to humans and other animals. The vet can look at samples of your dog’s skin and hair under a microscope, but it’s impossible to tell by looking at the dog.

Q. One of my pet’s ears seems very irritated. What I can use to clean it with?
ANSWER : A. Ear Irritation can be caused by a number of things ranging from allergies, ear infections or even mites. Dirty ears can also cause irritation and problems. Knowing the type of problem is best for figuring out how to treat it.

For plain dirty ears that do not have any odor, redness or leakage of discharge/debris, a simple over the counter canine ear cleaner can be used. Gently soak some cotton balls or a washcloth with the cleaner, and then use these to wipe out the flap of the ear and opening to the ear. Do NOT use Q-tips as these can become stuck or lodged in the curve of the ear canal and may cause injury to the ear drum.

If the ear is bright red or itchy without any dirt or debris in it, it may indicate an allergy. Sometimes an allergy medication can help provide relief in this situation. Your vet can give you the correct dosages of an over the counter allergy medication to use, or may recommend one specifically for dogs.

For infections and mites, changes to the ear such as bad smell or lots of debris and discharge, flecks of black or brown debris, or scabs and sores in the ear may be present. In these cases, it is best to have your vet take a sample of the ear debris to test for mites or infection. Your vet can then give you an ointment that is placed and left in the ear between ear cleanings. Most vets will then recommend cleaning the ears twice daily and then leaving in the ointment after for a period of ten days.

Ear mites ARE contagious to other pets, so if your dog does have them, it is best to treat any other pets in the house at the same time to prevent the mites from spreading around continuously.