The aughisky are trying to recreate the Dog People -- though they're not quite sure what standard they're going for, because there haven't been True Dogs in generations.

So... they're guessing, or encouraging the breeding of ones they especially like? Did Iros suggest "tall and willowy, with good lungs" because those are generally considered good traits to breed for in a Dog Person, or because he personally thinks they're pretty? Or is there a difference?