Felynthropy

Were cat affliction.
  Felynthropy is the condition in which a person transforms into a werecat, exhibiting feline features and abilities such as heightened senses, agility, and reflexes. The transformation can be triggered by a variety of factors such as the full moon, a strong emotional response, or contact with another infected individual's blood. Those afflicted with felynthropy must learn to control their new abilities and instincts, as they may be prone to behaving more like a wild animal in their transformed state. In some cases, they may also experience increased aggression and territoriality, making it difficult to maintain relationships with others.