The preference for a dog or a cat as a pet would depend on the individual's personal likes, lifestyle, and circumstances, rather than their psychopathic traits.
That said, psychopathy is associated with a lack of empathy and difficulty in forming emotional bonds with others, including animals. Some research suggests that individuals with psychopathic traits may be more likely to mistreat or show cruelty to animals due to their reduced ability to experience compassion and remorse. However, it's important to remember that not all individuals with psychopathic traits engage in such behaviors, and other factors, such as upbringing and environment, can also influence how they treat animals.
Pet preferences are highly individual and subjective, and psychopathy alone cannot determine whether someone would prefer a dog or a cat. Many psychopaths, just like non-psychopathic individuals, can have loving and positive relationships with pets, including both dogs and cats. Ultimately, the choice of a pet is based on the individual's personality, lifestyle, and preferences, and not necessarily their psychopathic traits.