A 2010 study at the University of Texas found that those who identified as “dog people” or someone who likes dogs better, tended to be more social and outgoing. Whereas “cat people” or people who prefer cats tended to be more neurotic and “open”, meaning creative, philosophical, or nontraditional. In a 2014 study at Carroll University, Wisconsin, people who said they were dog lovers were found to be more energetic and outgoing, and tended to follow rules closely, while cat lovers were more introverted, open-minded and sensitive. Cat people also tended to be non-conformists, as well as scoring higher on intelligence tests than dog lovers. Studies have shown that cat owners are more likely to have higher blood pressure according to CNN. (Source: Wikipedia)
Maybe none of this resonates and you just like what you like!