Well, I've always liked cats. Oddly, I've always been fascinated with big cats, not smaller cats like caracal, so you'd think I'd pick one of those. I'm a bit baffled myself, but I don't identify with big cats. I grok cats in general (really, grok doesn't get a red underline for spelling? nice), I understand their motivations, movements, and their play. Play especially.
As for caracal specifically, I discovered them a few years ago when I was looking up "Egyptian cats", something for a supers RPG I was making a character for. I came back to them a couple months ago when I was thinking about joining the fandom. Something about them just clicked with me, I don't know what it is. They're not as majestic as big cats, not quite as fast as cheetahs, and they look a bit ungainly with those hind legs being a bit longer than the front. But I don't really feel the need to be winning any "amazing cat" contests, and if I did, hidden in those funny legs is the potential to jump over three times my body length that I couldn't manage otherwise. Hidden talent I guess, a nice symbol if you're looking for one.
Plus, they're diverse, which is interesting. They started out in my mind as a north african cat, but with a tiny bit of research I find they range all over africa, the middle east, and into west/central asia, with different subspecies, colorations, eating habits, etcetera. Already a bit human-like, if you think about it.