my daughter is 13months old, should I start giving her cow milk and wat quantity

Hi Megha. Yes you can. At this age your child can have whatever you have. If you are giving for the first time try giving few sips to begin with so your child develops taste. I gave cow's milk on completing 1 year.

At this age baby's need anywhere from zero to one glass of milk. You can also give milk products like curds lassi paneer and a little cheese.

you can give organic/raw cow milk & milk products,not pasteurised milk products

my daughter is 3 month I giving her Buffalo milk ...and wat quantity

yes u can , but some time only