I only know of one person in RL who really disliked animals, especially cats. He was a total jackass (guess that comes from being a lawyer, too

). Anyways, he had a daughter a few years ago, Jessica, and after about 4 months or so she had breathing problems, and after a lot of tests they found her to have the worst form of SMA (spinal muscular atrophy), she's now paralyzed from the neck down. This must've drove him insane because then he bailed out on her and his wife at the time, leaving no contacts so she could even go after him for child support and med bills which, as you can imagine, are astronomical. His now ex-wife has since not been able to hold a steady job mostly because she has to stay home to watch Jessica as she requires 24 hour nursing. Her oldest son has been a huge help to her, as well as her first ex-husband (her oldest son's father), he's come back and has helped watch Jessica as well as helping her pay the bills.
Of course, viewing other animal dislikers out there based on him would be stereotypical of me, but this guy's the kind of guy that is the lowest of the low in my book, but obviously not because he dislikes animals. Just because someone doesn't like animals doesn't mean they're totally bad people, but it doesn't help a whole lot, IMO.