I never know how to answer this question. I experience empathy. A lot in some situations (I must admit, my empathy toward animals or people who are experiencing the loss of an animal tends to be stronger). I feel empathy when I listen to sad stories or read messages online. However, I cannot express empathy. I've never really understood how to let people know I understand. I try with my words. I guess it's easier online. But offline, I always come across as the exact opposite of empathetic. I'm not sure, as such, that I agree that empathy can only be felt if you can express and understand your feelings. I cannot and yet, I feel empathy.

Well, if you count writing. I guess I can express them to a point. :P I still have trouble recognizing them.