#5 Roman Reigns and Blue
Roman isn't a superstar who talks about his personal life a lot, but on a recent episode of WWE Ride Along, Roman shared the story of how he met Shield teammate Dean Ambrose's dog Blue and the duo didn't get along right away.
Roman informed fellow stablemate, Seth Rollins, that he was invited to Ambrose's home in Las Vegas and Ambrose asked if he wanted him to give him the tour. At this point, Reigns had already taken his shoes off and was walking around Ambrose's house in just his socks, when Blue decided to come and meet his owner's friend.
It seems that Blue wasn't exactly friendly with Reigns the first time he met him and decided to attack his feet to the extent where Roman thought he was going to eat them, which left the former United States Champion with the feeling that The Lunatic Fringe's dog didn't like him.
Roman did recall that he met him backstage at RAW a few weeks later and he seemed to be much more relaxed, so it could have just been the fact that Roman had decided to invade his home.