well, my 2 cents.
i,m kinda leaning towards a fox myself.having lived in northern ontario(timmins),for years,i got a chance to see 3 different colorations,of fox.the regular red,a cross fox(dark back,extending down the sides),hence the "cross fox" name,and the not very common silver fox,the rarest,and most beautiful version with a black back,and silvery sides. to me,this one looks like the more common,cross fox.
denis