I accidentally killed a fox, is there any type of omen or symbolism behind that?

Awh,I am sincerely upset by that,and to hear it as well,as it is never positive to kill an animal. Foxes represent cunning,intelligence,wisdom,shape shifting,hence the saying,"Cunning as a Fox"Hopefully it did not speak of your intelligence dying. Do,bury this animal properly as this will signify it was an accident,you are truly sorry for.