As you likely already know, people are attracted to similar others.1 In fact, eHarmony has built a multi-million dollar empire on the premise that people with similar dispositions make suitable relationship partners. (scienceofrelationships.com)
Matches aren't made via liking the same music or TV shows or someone's photo, but based on similar dispositions and compatible personalities — which is a bit more complex and relational. (datingsitesreviews.com)
Newfoundlands and Labrador Retrievers both originate from Newfoundland and have very similar dispositions. (blog.pawedin.com)