In the eternal fight for man's (and woman's) best friendship, are two forces of nature, beer, and dogs. Craft brewers around the United States have done an excellent job of marrying the two, either in their chosen brewery name, a specific craft beer, or, in the case of Everett, Massachusetts' own Bone Up Brewing Company, creating a whole craft beer series dedicated to dogs.
Back in the day, we're talking all the way back to the 90s and prior, the case of beer was the definitive unit of measurement for starting a good time.
There's no one single choice when it comes to choosing the best beer to mix with your batter-making ingredients - egg, flour, and (optional) spice. Choose a beer that matches the spirit of the meal that you are looking to cook. That's what it is most important.