...I obviously dislike humans since they are vicious and dangerous...
Some humans are vicious and dangerous but if you spent more time getting to know people you'd find that many humans are warm in friendly. However, if you approach people believing that all humans are vicious and dangerous, you're going to interpret their behavior more negatively and misunderstand them because of it which will reinforce your negative opinion of people. If you practice seeing everyone as individuals without assuming anything negative about them, you're more likely to see that there are many good people in the world and start feeling better around them.