RE: Doe bellowing like a cow??
Soarkrebel, huntingbgbucks is right. What you heard was a doe breeding bellow. Usually a doe will make this noise when a very big buck is in the area and she would rather breed with him than any of the others she has seen. What a golden opportunity!!! Unfortunately, if you were close enough to hear this, the big buck probably was, too, and he probably knew you were there. If you hear this noise again, hide the best you can and get ready. You might get to see a huge buck.
Check this website: bowhunting.net/Joe Gennaro's page