Cats don't like it when you stroke them against the grain.
The fur of pets is permeated with thin, sensitive hairs.
Most of the whiskers are on the head, the longest of which are the whiskers, as well as on the chest and back.

Stroking against the grain causes static electricity to build up.
The resulting micro-discharges irritate the whiskers and create discomfort for the cat.
In addition, the raised fur frightens the cat, so it begins to resist and is ready to attack.
Stroking an animal against its fur is unusual for fluffy animals. At this time, the cat's negative reflexes are triggered.
Benefits of petting fur
The pet associates stroking its fur with being licked by its mother cat.
This creates a sense of security and provides additional comfort, reminiscent of childhood.