I fleshed it a little but it's taking a while and I'm wondering if there's any better way?

In terms of Roadkill, or in this case, a dog dragging up a dead rabbit, how long until saving the hide is unadvisable?

I wasn't told about the rabbit until around midnight, and it had been fetched by the dog about five pm.

I was going to retrieve the critter from the trash can tomorrow to skin and macerate it, I'm wondering if it's worth it to save the hide or not.

Generally, how long until a hide is considered not usable for tanning purposes? I suppose if the hair is starting to slip or if it smells funny or chewed up by bugs? Just wondering if there's an advisable amount of time to salvage things, as I can't seem to find a good answer.

Hello! My fiancé recently told me he's headed out on a hunting trip with a buddy of his, he asked me if I knew how to tan hides. I told him no, to that he tells me that if I can figure it out, he'd like for me to make a "racoon hat" for him. That being said, I'm a seamstress by hobby and I've made many basic clothing pieces before, including hats. I have no idea where to start and, just by breezing through this subreddit, I see there's many complexities involve in this.

Does anyone have any resources I can use to start the learning process of prepping racoon hide? Any help is appreciated!

Thank you!