Klingons are proficient in the use of ritual hand-to-hand weapons and unarmed combat, and will actually prefer to fight using these methods over laser weapons. They frequently train in off-hand weapons training in order to surprise opponents. All Klingons will train in at least the bat'telh and the d'k tahg, and many frequently train in some of the other ceremonial Klingon weapons. Some also train in Mok'bara - the Klingon martial art form.
The Klingon forehead is a major distinguishing feature of this race, consisting of a ridged, bony pattern. This pattern is different for every Klingon, and is as distinguishing as fingerprints. A common curse heard among them is: "Hab Sosil' Quch", which means, "Your mother has a smooth forehead." Also, a bony backbone resembling that of a dinosaur runs up and down their spine.
Klingons have enhanced senses. Two of them, acute taste and smell, and acute vision, are genetic, but the third, combat reflexes, is learned from childhood, and is therefore second nature to Klingons.
By nature, they are hunters, and still practice the ritual of the hunt. They are taught tracking and cooking from a very early age. They hunt using a spear called a Gin'tak. They prefer their food raw, so the Cooking skill actually represents the ability to properly clean their food and prepare it in a traditional manner.
Most Klingons feel it is dishonorable to lie, cheat, steal, or bluff, and dislike those who do. This helps explain their dislike of Ferengi.
Klingons are now blood enemies of the Romulans, despite their former treaties with them.
Klingon warriors pride themselves on their combat abilities and feel the greatest honor that can be bestowed on warriors is to die in combat. These traits have been handed down from the Klingon spiritual leader, Kahless, over two millennia ago.
Kahless used the idea of honour to unite the people of the Klingon Homeworld at a time of its greatest struggle.
Also handed down were several traditional weapons with which to engage in melee.
Lastly, almost all Klingons show a widespread hatred of the Tribble. Currently, xenoculturalists are unable to account for the source of this hatred. Tribbles are banned from being transported to, or traded in, Klingon space. An old Klingon toast reflects their dislike of this animal. It goes: "QuvlIjDaq yIH tu'be'lu'jaj." Translated, this means, "May your coordinates be free of Tribbles."
Tribbles also share the dislike of Klingons. Instead of the usual purr, Tribbles will shriek if even exposed to a Klingon.
