You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray.

The ears derived from their canine ancestors gives them enhanced hearing, their ears swiveling and being able to notice minute sounds other races cannot. Perception increased by 2

The large Size of the Race works to both their benefit and detriment, increasing their overall strength but lowering their ability to do precise movements. Your Constitution and Strength are increased by 2 but your Dexterity is decreased by 1

Your armour is extremely strong, but is a extremely hard to be replaced and usually must be reforged by the wearer.
You gain toughness by default but loose it if your armour is damaged too heavily. Regaining it upon repairs to your armour being made

Due to your race being isolationist for so long your standoffish nature results in your charisma being decreased by 3

You gain proficiency in one of the following skills: Investigation or Perception

As an action, you let out an ear piercing howl from your maw invoking the strength of your ancestors. The howl can be heard 300 feet away. Every creature within 5 feet of you must make a Strength saving throw. The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. On a failed save, a creature takes 1d6 thunder damage, and it is knocked back 10 feet from you. The thunder damage increases to 2d6 at 6th level, 3d6 at 11th level, and 4d6 at 16th level. Once you use Ancestral Howl, you must complete a short or long rest before you can do so again.

The Wearing of their heavy armour during combat results in the need of long rests after heavy combat. Along with an increasing debuff overtime to speed, resulting in a slowing of 5 feet after 1 fight, 15 after 2 fights, 25 after 3 fights, 35 after 4 fights, 45 after 5 fights, till the White Wolf's armour grows too much of a burden for travel. This can be negated by the white wolf not having their armour on whilst traveling but other means of transport for the armour is needed.

 You have advantage on Dexterity checks made in snow or icy terrain, and a resistance to cold damage

Due to your large size you eat more. Eating 2 rations after a day of no combat and little travel, 3 rations after a day of some combat and little travel or no combat and a larger amount of travel. and 4 rations after combat and a larger amount of travel at rest.

White Wolf Tengus Mature fully around their 100s to 120s living up to an age of 900 staying healthy and fit up till the last 100 years.