I prefer feral oc's over anthro or humanoid. I don't know what it is, but I feel like I can fully express myself with feral oc's (no I am not part of the otherkin community, I don't believe in the whole identifying as a nonhuman being). I have always read books with personified animals and they just tend to be my favorite compared to other novels or fantasy series centering around anthro-like and humanoid beings. For example my favorite series currently is The Sight and Fell by David Clement-Davies, then the Mistmantle Chronicles by M. I. McAllistar, and finally the Warriors series by Erin Hunter. The only humanoid series that I have enjoyed and finished is the Inheritance Cycle by Christopher Paolini and even then there were fully feral dragons that were sort of able to have their own point of views we could see through and those were the parts I enjoyed the most. Another humanoid series I nearly finished (I just hated the last book too romancey for my tastes) was the Steel and Stone Series. Which if you've read it or even part of it it certainly has its flares of what I would consider completely feral animosity.
I have always been fascinated with animals and how they're societies work and how we humans see ourselves in them versus what they actually are. Its always been a unique concept to me and in my art I really like to highlight the reality even if its through cartoony art. Like for eagles, more often than not eagles are often seen scavenging and stealing, but the USA and many other countries as a whole think its some honorable and proud bird just because of its size and where it stands in the food chain of raptors. Or even hyenas we see them as giggling maniacs ready to snatch the honorable lions well fought for prey when in all honesty hyenas hunt down their prey more often while lions steal from hyenas majority of the time. All these little misconceptions can be played with and twisted to make some imagery that without ferals and our human conception on them would not be possible.
I also just find roleplaying feral animals much easier and far less mundane than roleplaying a humanoid or anthro. Something about needing to do basic survival things as well as fight for your life everyday as a feral animal with thoughts and feelings is so much fun to play with. I have to problem solve things and find sound reasoning to get by what would normally be considered impossible. Like for hyenas I like to think of them carving sculptures into ivory because 1) their jaw has a 1,100 psi, 2) their teeth are literally meant for crunching and carving into bones. They become artists in a way and can make themselves little decorations for their living space or they can make accessories. they can have earrings by literally shoving a piece of stone, bone, or ivory through their ear. No need for thumbs in that situation, just a couple of buddies. The things you can reason past with just looking at little features of an animal are amazing. You want to have a string necklace but you are a lion with no thumbs? Find a baboon! You won't be able to communicate without drawing pictures, but you can ask for a string and pay them with protecting their girls from invading foreign male baboons. Bam! Now you've got yourself a string tier and maker! Where do you get the string from? You can steal it from humans, weave long pieces of hair (lions mane, zebra hair, wildebeest hair), or even use flexible pieces of wood, as long as its dampened regularly.
I love drawing ferals as well, wild animals are just so much fun to draw and play with style wise compared to basically anything else. I've tried having humanoid chars, I've tried having anthro chars. In fact I do have a demon char, that I haven't posted yet, but I have one and she's just not a favorite, the only time I draw her is occasionally in my math class when the lecture's getting a little too boring. I just don't have that kind of connection really, I'm hoping after reading The Six of Crows duology by Leigh Bardugo that I'll have more of a connection to humanoid characters because I would someday like to rp as a humanoid character, and I would like to have some. But currently my major influences have all been book series where ferals have been the main points of views, not humanoid or anthro chars.