I hate milk, but my 20 month old LOVES it. He's doing fine, hasn't grown a tail, etc. He loves all kids of other calcium sources as well, both dairy and non-dairy. We will continue to give the cow's milk as long as he likes it and wants it. such as
Just to clarify a bit - here is some information from a non-biased (the publication's purpose is an overview of basic nutrition, not something that says 'hey cow's milk is the best thing on the planet' or 'cow's milk is the devil - run run far away!') source regarding calcium:
"Your best sources for calcium are milk and dairy products, plus fish such as canned sardines and salmon. Calcium is also found in dark green leafy vegetables, but the calcium in plant foods is bound into compounds that are less easily absorbed by your body.
After you are born, calcium continues to build your bones but only with the help of vitamin D, which produces a calcium-binding protein that enables you to absorb the calcium in the milk you are fed. To make sure you get your vitamin D, virtually all the milk sold in the United States is fortified with the vitamin. Vitamin D isn't milk's only contribution. Iron increases the production of collagen, the most important protein in bone. Milk contains lactoferrin (lacto = milk; ferri - iron), an iron-binding compound that stimulates the production of cells that promote bone growth."
Ultimately it is your decision as to how you'd like to proceed with your child. However, make sure that you are researching both sides of the issue to determine whether you believe claims are true or false.