Goblins in general die quickly to my Dwarves. I remember an ambush startling some of my masons, getting locked in a minor booze stockpile and
woah did the mayor get pissed. Grabbed his trusty iron spear, imported straight from the finest human weaponsmiths (admittedly, not as good as Dwarf make), ran up to the Goblins Achilles style, dodging flying bolts everywhere before promptly stabbing loads of them - getting shot in the shoulder, and calmly walking it off back to the make shift hospital, whilst the other Dwarves were just arriving to clean up.
kobolds kooboold koboold kobololod KOBOLDS
These blighters are resilient ninjas. All the ones I find have a habit of dying quickly, but they always take at least 9 pages of damage before dying. One made it to 12, after I sent just four Dwarves - my expedition leader, a captain macedwarf and two legendary marksdwarves to ensure the other two weren't killed by wandering unkindness of ravens.
The Captain walks up to the Kobold, charging into the Kobold and knocking it down. The macedwarf goes for a clean kill, aiming for the head - which the Kobold blocks with it's dagger. Proceed to 5 pages of the Kobold stabbing the Dwarf, only ever bruising the captain through his cloth armour (too tough for the poor thing), forcing the macelord to limp bloodily (in a very literal sense) home before the Kobold was finally shot and killed by the marksdwarves. I think that Kobold's a zombie now, not sure where it's corpse went.