Is It Safe to Touch Cat Saliva? The Risks Explained


Cat saliva is a topic that many cat owners wonder about, especially when their beloved feline wants to lick them or share food and water bowls. While the idea of being licked by a cat may seem endearing to some, others are concerned about health risks associated with exposure to cat saliva.

According to one study, cat saliva contains bacteria and other microorganisms that can be harmful if transmitted to humans. Additionally, proteins found in cat saliva, like Fel d 1, are common causes of allergies in people. However, cat saliva also has some benefits, like compounds that give it antibacterial properties.

So is cat saliva safe or something to be avoided? The answer depends on a variety of factors explored throughout this article.

What is in Cat Saliva?

Cat saliva contains a number of components, including:

  • Water – Cat saliva is mostly composed of water, which makes up 70-75% of the liquid.
  • Enzymes – Enzymes like lysozyme help cats digest their food. The enzyme amylase starts breaking down carbohydrates in the mouth.
  • Bacteria – Cat saliva contains bacteria that are both beneficial and harmful. Some bacteria help prevent periodontal disease, while others can cause infection if introduced into a wound.
  • Antimicrobial agents – Substances like lactoferrin and peroxidases have antimicrobial properties to protect cats from disease.
  • Electrolytes – Saliva contains electrolytes like sodium, potassium, and chloride that help transmit nerve signals.
  • Hormones – Hormones like epidermal growth factor aid in cell regeneration and healing.
  • Vitamins – Vitamins like vitamin A promote good oral health.

While cat saliva serves important functions for cats, some components can be problematic for people. Bacteria, viruses, and parasites in cat saliva may cause illness if introduced into the human body through a bite or scratch.

Potential Health Risks

Cat saliva can potentially transmit diseases to humans, though the risk is relatively low in most cases. Some of the main diseases that may spread through cat saliva contact include:

Bartonella – Also called “cat scratch disease,” this bacterial infection causes swollen lymph nodes and fever in humans. Bartonella is spread through scratches, bites, or even just contact with carrier cats’ saliva. According to the CDC, around 12,000 people are hospitalized from Bartonella each year in the U.S.

Rabies – A rare but potentially fatal viral disease that infects the central nervous system. It spreads through the saliva of infected animals via bites or scratches. Rabies causes neurological symptoms and is almost always fatal if left untreated. Though more common in wild animals, cats can potentially carry rabies as well.

Cat Scratch Fever – Another bacterial disease caused by Bartonella henselae bacteria. Its symptoms are similar to bartonella infections. Humans contract it through bites, scratches, or contact with carrier cats’ saliva. Most cases are mild, but can be serious in immunocompromised people.

While the risk of contracting a disease from cat saliva is low, it is still present. Cat owners should take basic precautions like avoiding scratches and bites, especially for high-risk groups like pregnant women or young children. Proper veterinary care and vaccines can also reduce disease transmission risks. But in general, healthy adults are unlikely to get seriously ill from casual contact with cat saliva.

Precautions for Cat Owners

There are some simple precautions cat owners can take to reduce the risk of illness from cat saliva contact. According to the Cornell Feline Health Center, proper hygiene like washing hands before meals and after touching cats can help prevent infection (source). It’s important to thoroughly wash any areas of skin that were licked or scratched by a cat.

Cat bites and scratches can introduce bacteria deep into the skin and cause infections. These wounds should be promptly washed with soap and warm water. Keeping cats’ nails trimmed can reduce scratches. See a doctor for any bite or scratch that results in redness, swelling, pus, or pain (source).

Benefits of Cat Saliva

Cat saliva contains enzymes and proteins that aid in digestion, breaking down food particles in the mouth. Their saliva also has mild antiseptic properties that promote healing. When a cat grooms itself or another cat, the saliva helps keep its fur clean and free of debris while also disinfecting minor scratches or wounds.

Additionally, cat saliva plays an important role in bonding. When cats groom each other, it helps strengthen social connections. A mother cat’s licking of her kittens also helps stimulate bowel movements and urination when they are young. So cat saliva, while containing potential risks, can also have benefits for grooming, digestion, and relationship building between cats.

For information on the antiseptic properties of cat saliva see this reference:

Safety Tips for Children

It’s important for parents and guardians to supervise interactions between children and cats to ensure safety for both. Young children often don’t understand a cat’s boundaries and limits for handling. Cats can scratch or bite if annoyed or frightened by rough handling.

Experts recommend teaching children how to properly interact with cats from an early age. Children should be taught to pet cats gently, avoiding sensitive areas like the stomach. They should also allow the cat to approach them first rather than chasing after it. Children can help build a cat’s trust by offering treats or catnip.

Parents should monitor play sessions and intervene if the cat seems distressed. Provide alternate toys if the child wants to play rough. Make sure the cat has escape routes to get away if overwhelmed. Praising gentle handling helps reinforce good behavior. With supervision and guidance, children and cats can happily coexist. For more tips, see this article on kid and cat safety.

Saliva Differences in Cats vs. Dogs

While both cat and dog saliva contain proteins that can prompt allergic reactions in humans, cat saliva tends to have more allergenic proteins than dog saliva. This means people with cat allergies may react more severely to cat saliva compared to dog saliva.

One of the main allergenic proteins found in cat saliva is a protein called Fel d 1. This protein is absent in dog saliva, which is one reason why cat saliva provokes more intense allergic reactions in some people. Even people who aren’t allergic to cats can develop rashes or skin irritation from exposure to Fel d 1 in cat saliva.

In addition to Fel d 1, cat saliva contains other proteins like albumin and immunoglobulin A that are known to cause allergic reactions. The combination of these multiple allergenic proteins makes cat saliva more problematic for people with allergies than dog saliva.

For those predisposed to pet allergies, exposure to the saliva of cats may trigger more troublesome symptoms like itchy skin, hives, swollen airways, and respiratory irritation. These reactions tend to be more common with cat saliva contact compared to dog saliva contact in people with sensitivity to pet allergens.

When to See a Doctor

Cat bites and scratches can become infected, even if the wound appears minor. Seek medical attention if the bite or scratch site shows signs of infection, including:

  • Redness, swelling, warmth, or tenderness around the wound
  • Pus or cloudy drainage from the wound
  • Red streaks extending from the wound
  • Fever or chills
  • Fatigue or flu-like symptoms
  • Muscle aches or swollen lymph nodes near the wound

Infected wounds should be evaluated promptly, as antibiotics may be needed to treat infection caused by bacteria such as Pasteurella multocida or Bartonella henselae (which causes cat scratch disease). Severe infections may require hospitalization for IV antibiotics or surgical drainage.

See a doctor right away if the bite or scratch is on your face, joints, or tendons, as these areas are at higher risk of complications. Also seek urgent care for wounds on people with weakened immune systems, such as infants, the elderly, or those on immunosuppressive drugs.


Preventing Saliva Contact

There are several ways to avoid direct contact with cat saliva and reduce the risk of illness:

  • Avoid kissing your cat on the mouth or face, or allowing them to lick your mouth, nose or eyes 1.
  • Wash your hands with soap and water after petting or handling your cat, especially before eating 2.
  • Keep scratches or bites clean and watch for signs of infection like redness, swelling, warmth, or pus 3.
  • Avoid contact with your cat’s litter box and feces which can contain bacteria and parasites.
  • Clean food and water bowls regularly to prevent the spread of bacteria.
  • Clip your cat’s claws regularly to reduce scratching.

Taking simple precautions can greatly reduce the chances of becoming sick from your cat’s saliva. Frequent handwashing and avoiding mouth contact are key.


In closing, while cat saliva does contain bacteria that can potentially cause illness in humans if ingested or entering open wounds, the risks are relatively low for healthy adults. Practicing basic hygiene like hand washing after handling cats, along with taking precautions such as trimming sharp claws, can help reduce exposure. For high-risk groups like pregnant women, young children and immunocompromised individuals, extra care should be taken to avoid contact with cat saliva. Overall, the joy cats bring into our lives far outweighs the small risks associated with their saliva. With proper precautions, cat owners can continue to safely interact with their beloved feline companions.

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