First recorded by Manfred Mann (US #95/UK #5 1968).
Also recorded by The Country Gentlemen (1970).
Other hit version by Tom T. Hall (C&W #9 1976).
From the wiki: “Note: NOT the mid-’70s hit by Sweet. ‘Fox on the Run’ was first recorded by Manfred Mann as a single issued 29 November 1968. It was introduced to Bluegrass by Bill Emerson and quickly became a Bluegrass favorite, first recorded in that genre by The Country Gentlemen in 1970. In 1976, ‘Fox on the Run’ was covered by Country music singer-songwriter Tom T. Hall whose recording peaked in the US Country Top-10, its highest-charting US performance.”
The Country Gentlemen, “Fox on the Run” (1970):
Tom T. Hall, “Fox on the Run” (1976):