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Feline pheromones 
 To understand how cats percieve the world

Pheromones are a subclass of semiochemicals, in concrete, fatty acids that are used for communication inside one specie, what we call intra-specific. These fatty acids induce changes in the limbic system and hypothalamus and appear to alter emotional states in cats (1). In short and easy: pheromones are substances that cats use to communicate between them.

When we say communication we assume that there is the “sender” and the “receptor”, and the sender cat expects a response from the receptor cat. For this reason, cats must be able to detect pheromones, and they are. They have a special organ to perceive and understand these messages left from other cats. 

This organ is called Vomeronasal Organ (abbreviated to VNO, and sometimes known as the Jacobson’s organ) it consists of a pair of fluid-filled sacs which are located within the hard palate. As the location is a bit difficult to reach for these molecules (pheromones), cats will use the “Flehmen” response to facilitate this process.


Flehmen is a specific, very peculiar posture, that cats (and many mammals) will adopt to detect the pheromones. The most known example, in another mammal, is the horse or the donkey, when they retract the superior lip and show the teeth with the mouth a bit open. Can you imagine a horse in this posture? Cats do the same.
The pheromones are produced in specialised glands. Cats have glands around the body to produce different types of pheromone, with different communication aims. The locations of the glands are (see pictures above and below):
Pink: the area between each ear and the eye where the fur is sparse (temporal or periaural glands).
Blue: the margins of the lips (perioral glands).
Yellow: under the chin (submandibular gland).
Green: the cheeks (cheek glands).
White:the base of the tail and extending along the tail (caudal glands).
Purple: plantar pads on the feet (plantar pad glands).
Orange: the area around the urinary and genital organs (urogenital area) which leads to the production of pheromones in urine.
Dark blue: the area around the anus, perianal area (which includes the anal glands) which leads to the production of pheromones in faeces.
Red: the area surrounding the teats (intermammary sulcus) in females.

There are different types of pheromones, and each one has a specific function, as described below. Knowing each pheromone and its function, scientists have developed synthetic copies of some of the known pheromones to help cats in different situations. We can find some of them in spray solution, and others as plug in diffusers.

Facial pheromones (F). Can be divided in 5 subgroups:
F1: Unknown function
F2: Associated with sexual behaviour.
F3: Associated with territorial behaviour. I’d like to talk a bit more of this one, because is the most used for humans to reduce cat’s stress, and it is been proved to work.There are different brands offering this product, but for example Feliway Classic (Ceva): Use of Feliway has been associated with increased grooming and food intake in hospitalized cats (1) decreased urine spraying (2) and decreased scratching (3). F3 makes them feel safe, because they can associate these scent as “home”.
F4: Associated with maintaining group cohesion in group-living cats. It can help to maintain the harmony at home or to introduce a new cat at home.
F5: Unknown function.

Body pheromones (colours from the picture above):
  • Maternal appeasing pheromone (Red) (from the mammary sulcus). Many mammals produce this type of pheromones when nursing their young. Feliway (ceva) also offers this synthetic pheromone, known as “Feliway friends”, only available in plug-in diffuser. This one is for multicat houses, helps the cats get along at home and to maintain constant harmony.
  • “Scratching” pheromones (Purple): the pheromones left form the plantar pads when scratching are used to send territorial messages. Ceva has also this synthetic pheromone, “feliscratch”. This one can help to redirect our cat to use the scratcher post and avoid other undesired locations.
  • “Faeces” pheromones: it is know that cats can exhibit a behaviour called “Middening” that consist in the deposition of faeces without any burying and often in a prominent location. This behaviour makes us think that this behaviour can play a communication roll. It is known, that the faeces are covered by the content of the anal glands, and part of this are pheromones.
And just before finishing I’d like to explain that we cannot perceive cats’ pheromones, because as I said above, are intra-specific substances. Even that we cannot detect them, when cats rub against us, they leave their scent which can be detected for other cats in the future.

Do you need professional help with your cat? Check my website.
You can join our instagram community to learn even more about cats :)

References:
1. Griffith C, Steigerwald E, Buffington C: Effects of a synthetic facial pheromone on behavior of cats, J Am Vet Med Assoc 217:1154, 2000.
2. Mills DS, White JC: Long-term follow up of the effect of a pheromone therapy on feline spraying behaviour, Vet Rec 147:746, 2000.
3. Pageat P, Gaultier E: Current research in canine and feline phero- mones, Vet Clin North Am Small Anim Pract 33:187, 2003.
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