What is the name of a person who knows everything about cats? - briefly
A person who possesses extensive knowledge about cats is called a feline expert or cat specialist.
What is the name of a person who knows everything about cats? - in detail
A person who possesses extensive knowledge about cats is often referred to as a "cat enthusiast" or a "feline expert." However, in more specialized contexts, such individuals may be called "felinologists" or "cattery managers." Felinologists are professionals who study cats and their behaviors scientifically. Cattery managers, on the other hand, oversee the breeding and care of cats in catteries, requiring a deep understanding of feline genetics, health, and behavior. These titles reflect the depth and breadth of knowledge that these individuals have acquired about cats through either formal education or extensive experience.