I was sitting a water source yesterday and had two large canines, light brown/golden color, run through the field, at 150 yards they looked at least as big as my 100lb Pyreneese dog, but I didn't get a good look through binos or scope. They were immediately followed by a small/normal size coyote, I'd guess 35-40 lbs that I watched for a while hoping the bigger two would come back. CPW site describes an upper end size of 50lbs. Coyote is the only thing that makes sense to me, but damn they were big.