To help them feel more secure, cats mark their territory using a variety of visual and scent signals. This is a normal behavior for cats and is necessary for their well-being.
Feline urine spraying is one of the primary methods used by cats to mark their territory. Whether male or female, neutered or not, it is exhibited in some way by almost every cat.
There are several kinds of scratching, not all of which are scratch marking. For example: Scratching horizontal surfaces when waking up, during play or sexual excitation Scratching on vertical surfaces to keep claws trimmed Scratching on vertical surfaces to send a signal (Only this can be qualified as a marking behavior)
The placing of facial pheromones is a behavior which is well known to all cat owners.