The Dexter Calf is the offspring of a Bull and Dexter Cow. Its parent, the Dexter Cow was released on the February 17, 2011 as part of the Wishing Well. When you harvest milk from your Dairy Farm (with 1 Bull and at least 1 Dexter Cow inside) there is a chance that a Dexter Calf will be born. When you harvest from your Cow Pasture with at least 1 Dexter Cow there is a chance that a Dexter Calf will be born.