Is there something wrong with me if I don't care about other people, but care about animals?

It seems that this type of emotional regard towards fellow human beings is not unlike an abused animals mistrust of an owner. I'm about your age and I have feelings relatively close to what it is you're describing. I believe this stems from a callousness built up by mistreatment from other people such as verbal or physical abuse in a social or private setting. Or possibly from the way that you or i have been raised; I am a firm believer in nurture over nature, and that if we are raised by parents who are "selfish" or independent/distant with their family, It can breed a 'like' child. To put it simply, we behave like our parents in more ways than some of us realize or are willing to admit. If your parents indirectly raised you to be self sufficient or independent, it's not unnatural to expect that of the world around you. On the flip side of that coin, animals do not have the same independence (In a more or less urban setting) that you or i do. So it would make sense that you would feel sympathy/empathy for something that has not done you wrong or has no way supporting itself. Which leads me to the final component of this answer, unlike what I infer your belief is (based on your question), I believe that people are inherently good in some way or another. Which would more than explain why you feel the need to nurture something that has no way of (openly) fending for itself. There is a good person in there that needs to see that people are capable of honest-to-god selfless acts of charity. They're few and f a r in between, but they are out there. Why else would we have homeless shelters ? as well as a number of other charity driven non-profit organizations. Hope this helps you reflect :D