Cows in Ocarina of Time serve Link as another way to refill a low heart meter. Below are locations in which you can reach a cow and receive milk in an empty bottle by playing Epona’s Song.

Lon Lon Ranch

 

There are two cows in the main barn and two more located in the back silo.

 

Kakariko Village

 

Impa’s house holds one cow.

 

Death Mountain Trail

 

Bomb the boulders out of the way in order to continue up the trail. Under one of the boulders is a secret grotto where the cow is located.

 

Hyrule Field

 

Near the entrance to Gerudo Valley, there is a circle of boulders. Use bombs or the hammer to open a secret grotto in the center where the cow is located.

 

Gerudo Valley

 

Grab the cucco and float across the canyon to the other (Gerudo) side. Continue floating until you land on the patch of farmland under the bridge where a cow and Gerudo are standing.

 

Kokiri Forest

 

After Adult Link beats Malon’s obstacle course, a cow will be living in Link’s tree house.