There's a cat topic, and now there's a dog topic (at least one that's not 5 years old) :P
I actually have two, though I'm depressed to find out I only have pictures of the older one:
190 lbs (86 kg) English Mastiff, and all he really does is sleep and chase squirrels (yes,
that's me in the background. Stop staring at my junk).
My other dog is a Boerboel (South African Mastiff). She's a bit smaller (140 lbs, 64kg),
and is currently staying at my parents' as I travel for work. I'll post a pic soon when I
get back to town to take one.