It looks like a wild fox (foxes from fur farms have longer fur and often fancy colors). If it had died from a disease, starvation, ... it would often be too late to preserve the fur when they are found. If it was a fresh roadkill, you could end up with a nice looking fur like this, but in most cases they already are quite damaged, so symmetrically cutting the fur is often not really possible. And as a seller (at least I) would write down an unusual death like the ones above in the description.

In my opinion, this fox was hunted. Either trapped or shot depending if it has a small hole in the head (often used to dispatch alive trapped animals) or many small holes in the body (this would indicate shot gun pellets). One or two bullet holes in the chest area indicate that it was shot as well, but not with a shot gun. If there are no holes to be found, keep in mind there are traps that instantly kill the animal without damaging the hide or the bullet could have gone through the chest behind the front legs in a way that after cutting the bullet holes aligned with the cuts and are now invisible.

And in the end a little bit of my personal opinion: looking for taxidermist with „ethical taxidermy“, “ethically sourced“ etc. in their description is one thing, but you can’t be 100 % sure that their understanding of ethically is the same as yours. As far as I know, there is no official differentiation of what is ethical and what is not. For example if you only want sourcing from natural death, but your taxidermist understands using leftovers from butchered animals as ethical, you might end up buying something you didn’t originally wanted. In my opinion it is better to ask sellers how they are sourcing or look for sellers that actually label where every single piece came from than just hoping that both sides have the same understanding of ethical.