Why do cats feel comfortable with the existence of shovel officers?

Because the cat trusts and relies on the shovel officer, the shovel officer gives the cat enough sense of security.

When a cat has a sense of security, it will let go of its worries and devote itself to a comfortable life. If there is no sense of security, even if there are more cat toys and more cat nests at home, it will not reassure cats.

Cats are very cautious. If a guest or stranger comes to the official residence, the cat owner who is usually overbearing at home will usually get it done in seconds. He would hide in the corner and scream all the time. If they don't come out, only when strangers leave will they be restored to their original state. You can say it's in the nest, but it's the nature of cats.