had 5 - great with kids, no aggression at all just loyalty and personality.
They're pure strain without terrier/hound hence no aggression. Bred in Tibet, used to be considered the reincarnation of tibetan emperors and given human wet nurses when puppies (wierd or what). They make great watchdogs but once the burglar gets in they'll lick his hand and show him where the silver is. They have an endearing habit of chasing absolutely nothing around at top speed for protracted periods.
First came to Europe in 19thc and every dog in Europe and USA can be traced back to the 2 or 3 that were brought out of Tibet.
And yes, when I walked the 5 of them to the shops I looked extremely ummmm...metrosexual
My mum bred an Irish champion and came somewhere high up in Crufts (the dog not my mum...my mum got a highly commended ))
edit : nick - not a bit aggressive. They're fluffy little balls of love. (blegh)