Whilst Darwin style evolution is the default choice for explaining how things came to be, and I get that, sometimes I wonder why some obvious directions of evolution have not been taken. I'm puzzled that we have so few flying mammals. How, with all their voracious hunting skills, appetite for birds and energy did cats never manage to fly? Had they done so small birds would pretty much be extinct and battles between cats and raptors might be commonplace in our skies.
I'm not saying that this would be a good thing but cats with wings has to be a logical step in their own progress as predators. You could argue that because cats have not developed wings (and flight) there may some inherent cap on evolution that prevents a creature becoming too dominant in it's field. This doesn't apply to humans though (that's a bit of a stretch) as we collide with everything in our path. Blah blah ... getting back to cats; we have interfered with feline evolution by domesticating them to the point that there's now no need for them to fly, so they don't.
Bigger cats, cougars, pumas etc. maybe could've gone this way but as most of their prey is ground dwelling there would be no need so it only seems a worthwhile extra attribute for smaller cats. If there was/is a god who controls evolution in some limited way or within creative boundaries then that god may have decided that wings would be a strength too far for cats versus the rest, so it never happened. Otherwise it's another random act of unintelligent nature limiting the success of one strand of creation.
I've really no idea or scientific insight into the whole theory of evolution (as is obvious), I'm just checking out one animal at a time and then, as the full weight of history and biology crash down on me, giving up and rambling. Of course this entire train of thought was inspired by me dreaming of one of our cats was up a tree attacking and subduing an owl in a very violent and unpleasant manner. "Don't fear the Reaper" by Blue Oyster Cult was playing along as the soundtrack to these slow motion Spaghetti Western style events. I awoke somewhat disturbed. I can't quite see cats the same way anymore, despite the fact that the cat in the dream was not equipped with wings of any kind.