What does the close-up of small animals mean?

In order to create an uneasy and tense atmosphere.

Animals are more sensitive than people. Close-ups of cats and dogs are designed to create an uneasy and tense atmosphere. By the way, I'll give you time to rest and think and ease your mood.

Close-up is a broadcasting term. Literary meaning is the reflection of reportage, which reflects social life. Photographic terminology refers to a lens that shoots a portrait face and a part of the subject.