What is exact reaction when he sees the people in striped pajamas for very first time?

When the narrator, Bruno, sees the people in striped pajamas for the very first time, his initial reaction is one of curiosity and confusion. He describes them as looking like “strange animals” and wonders why they are all wearing the same clothes.

Bruno does not yet understand the full extent of the Nazi concentration camp system or the horrors that are taking place within it. Instead, he sees the people in striped pajamas as mysterious and unfamiliar creatures, and his only concern is how they might affect his own life.