What is a group of giraffes called?

A group of giraffes is called a tower.

While giraffes are generally solitary animals, they sometimes congregate in loose, non-territorial groupings. These gatherings lack a strong hierarchical structure and are often temporary. The term "tower" is the most widely accepted and commonly used term to describe such a group.

However, the term "herd" is also occasionally used, although less frequently. Some sources might also use the term "corps".