well you just described a lab!!! i have 2 of them and kids pull on there ears and tails and they don't even flinch... they both weigh about 65 lbs and my wife spends about 30 mins a day exercising them.... it is also a proven fact that Labs can love more than all other dogs..
You know, I read stuff like this all the time, and I must have just had bad luck, but I've known 4 lab owners, 1 down the street, my neighbor, my sister and a good friend, and those dogs are all bat s#!^ crazy.
I would also say that Boxer's are really great dogs, I've been around a ton of them. The only problem I've seen is that they have a relatively short life, maybe around 6-7 years because of (I think) joint problems.