I have fallen down the rabbit hole that is stylized cat drawing xD
I now see why some people only draw cats; it's really, really fun.
Version without shading/lighting:
Program Used: Autodesk Sketchbook (I was trying it out just for fun, and I really like it :D There are SO MANY brushes, all of which are cool and realistic and interesting (they even have some "glow" ones that are great for dramatic lighing, which is basically the only lighting I do xD). The only downsides are that the fill tool does not..... fill in things?? I couldn't get it to work for some reason. There's also no clipping masks/alpha lock. All of these are big no-no's for me personally because I heavily use all three of those tools while drawing. I had to hand color/hand shade stuff which took a while xP)
Time: 3ish hours?? That's not a lot for me but I wish I didn't spend so much time on this.... it mainly took that long because I had to hand color and shade things, like I mentioned above.