My oldest two were formula fed and got milk at 12 months. My third was exclusively breastfed 13 months, he now nurses and eats some solids at 20 months and I decided not to introduce cow's milk until he weans.
Cow milk I think she had for the first time around 18 months. It's not a regular thing though, usually we have almond or soy. She's almost 2 and nursing way less these days so she's drinking more liquids but prefers water to any type of milk.