Cats, as we know, have a habit of licking not only themselves, but also each other.
And they do this not only for hygienic purposes.
Firstly, through licking, cats maintain family and social ties.
This is a unique manifestation of love, affection, and trust.
The second reason is safety. When cats lick each other, they exchange scents. This allows them to distinguish their own from strangers.
In addition, licking helps cats cope with stress and gives a feeling of calm.