So my solo endorsement is good up to civil twilight . I'm on my last taxiback. sun has just set. I stop at the hold short to look for landing traffic. Then this raggedy coyote just leisurely strolls across the grass and over the runway about 150ft past the numbers angling towards me to within 30 ft away and then behind me. I'm glad I was taking off and not landing Another weird one tonight. Minneapolis Center or Approach (still not sure?) was on our unicom (122.8) asking about a MAYDAY. Never heard anything else, hopefully just a false alarm.