BrewDog is an old favourite of mine. It was started by a dog (with a couple of humans) and so is super dog friendly. I got the usual amount of excessive attention in the Cardiff Brewdog (just the way I like it) and was offered a bowl of water. I also got my photo taken for the Brewdog twitter account (#doginthebar). The humans had chilli-dogs in here one night which worried me, but it have since been reassured that these dogs are, in fact, sausages (humans always over complicate things).
What the humans say:
Great beer and always dog friendly. The chilli-dogs (no dogs were harmed) were amazing.