How to use दोगे and other forms?
दोगा should work, no ?
The masculine form would be दोगे.
I imagine the cat that is sitting on top of the dog is asking the cow.
क्या तुम मुझे दूध हर दिन दोगी? Is this correct too?
Yep, also correct. If I'm not mistaken, your way of writing it emphasizes a little more the 'every day' part, but it's still fine.
क्या तुम रोज़ मुझे दूध दोगे . what is wrong in this sentence? Any one suggest me?
Should have been accepted. You can report if you see the sentence again.