It's a question with a question word. That word needs to go first. Then, for it to be a question the verb needs to come before the subject, so gör must come before the subject din hund.
A question without a question word must also have the verb first:
Statement: Du läser ('You are reading')
Question: Läser du? ('Are you reading?')
Thank unexisting god I'm Russian, we have a bunch of situations where our word order is not even determined and can be any, so that I understand how Swedish sentences are built easily, I just switch my mind to russian in some cases, in some I switch it to English and it works perfectly almost everywhere
I think it's correctly pronounced. We very often swallow the d at the end of vad, unless we speak very clearly. I hear the d at the end of hund here, but in casual speech, you very often hear people say it more as though it were written hunn. (somewhat depending on dialect, of course)