About five days ago, my cat came in from outside with a small bloody wound on the side of his head. I did my best to clean it up, and I've been trying to keep him inside until it heals so it won't get infected (though to no avail, as my mom always throws the cat outside when he gets too noisy or after he uses the littlebox)
A couple days later, I noticed the wound was nearly twice as large as before. And now today, he has a gaping bloody wound that runs from the top of his head all the way down to his chin, covering nearly half his face. He doesn't seem to be in pain or anything, but I just don't know what to do. I'm worried it'll get infected or that it might be having some unseen negative effect on him even though he doesn't seem to be suffering.
I'm assuming he's scratching and clawing at it and causing it to open even further. What can I do to get him to leave the wound alone? Or at the least, keep him inside? My mom won't keep him inside if I tell her to. She hates the smell of cat poop and tosses him and the litterbox outside whenever he uses it.