We need just a few more specifics...

-How much grooming can your brother handle? Will he be willing to brush for an hour everyday, take it to the groomer to be clipped every six weeks, or is he looking for something that he can just rub down with a brush once a week?

-How much exersise can he handle? A jogging companion? Or maybe he wants something he can just let offleash to run around (in which case he would need a breed willing to come back lol)? Or something that can take for a short walk everyday?

-Does he hate barking? What about drool? Shedding?

-Is there anything he would like to do with the dog? Some dogs are more suited for some things than others. Agility, flyball, flying disc, herding, etc?