Your constitution score increases by +2 and your strength score increases by +1.

Auchtarn in general are taller than humans, and are significantly taller than most dwarves, standing at approximately 6'3" for men and 6'0" for women.

Auchtarn in general weigh similar to built humans and half orcs of around the same height

Auchtarn mature quicker than dwarves, and often succumb to disease in their final years of life.  On average most Auchtarn live to 60 to 65 years, and mature at approximately 10-12 years.

Auchtarn can see in low light as if it were bright, and darkness as if it were dim up to 30ft.

Due to their creation as a slave species, Auchtarn often tend to look very similar to one another.  It's only been recently that newborns are being discovered with significant changes in fur patterning and facial structure.

Your character knows Common and Auchtarnian.

As a bonus action, you may mark a suitable target that is either currently within 15ft of you and able to be smelled, or has left an article of clothing with you (target need not be present, or even be known to the player).  While a target has been marked and is not present, the player is able to follow their scent trail and track them provided the trail is no longer than 48h old. If the target enters within 200ft of the player, they have disadvantage on all stealth checks to hide from the player and only the player, and the player has advantage on all perception/navigation checks to find the target and only the target.  This effect lasts until dismissed, until concentration is lost (see concentration for spells) or one of the following happens:

• Target severs the scent trail by boarding a vehicle, teleporting, flying, or travelling to a different plane.
• Target polymorphs into a form which does not have a scent, ie elementals, most aberrations, etc.  Polymorphing into an animal does not sever the scent trail!
• Trail expires after 48h.  If you have a piece of clothing, you can re-smell it as often as you'd like to see if you pick up on anything
• Target somehow physically removes their scent.
• A different scent trail is concentrated upon.

Suitable targets include any Humanoids, Fiends, Fey, Giants, Dragons, or Celestials.  Intelligent undead do not emit any signature smell, although they will be known to be undead.