Hey Paul .
It even happens when you do run every day , Trust me
Hello Kevin .
If calves are left with the cows they will usually suck until they 9-10 months old. Usually sell them before they are that old.
A calf might survive at one or two months old without milk but would never amount anything .
This video is kinda off topic but the calves were hauled there on wood gas and the hay they have been eating was farmed and hauled with wood gas. Also wood gas took me there and back just a little while ago to pick up my check.