Most probably he is not a Muslim just like me. Being a Muslim is not what is written in your birth certificate or any form or ID. As Islam says, If you don't follow the guidlines which I consider a humanitarian guidlines more than religious guidlines,and if you live as an animal in a forest. If you don't stick to what God has instructed humans, then you are not a Muslim.

Anyway, Is it true that your God is a Cow?:)