I want to add that when you're getting started early on it's way better to not focus or worry about what your audience wants to see at all. It's ridiculously easy to get caught up in that if you're not careful, but when you've only been going for a month or two, it makes things VERY hard to want to keep going, because you're not making something for you, you're making something for your audience. There is a point where I do think knowing who your audience is does matter a little (but only just a little), but the first few months, or even the first year, just isn't then. And ultimately, even if/when your audience and what they want to see DOES start to matter a little (because they're paying your bills), you shouldn't push yourself to do things just for them that you don't have fun doing (because they'll never matter more than your happiness).
BUT YES, first few months I really do think should just be focusing on getting the hang of things, pushing your art to where you want it to be, and just plain doing what you want to do. There is a MASSIVE anthropomorphic animal/alien/creature comic audience that far outmatches any folks that dislike 'em, and there are comic groups completely dedicated to that sort of thing. Don't force yourself to draw humans for things just because it's "what people want to see", cuz as someone who did that in college, I can safely say you'll hate it even if you manage to get good at it. Not saying you shouldn't try drawing people, having that tool in your toolbelt is extremely useful if you ever decide to do professional work, but if you genuinely want to get better at humans for yourself and not for others, it'll be a much easier, less depressing, road to tred.
(as an aside, even though I forced myself to do that in college, I don't force myself to now, I started genuinely wanting to later on and just plain enjoy it more now. STILL LOVE ME SOME ANIMALS THOUGH)