Species

Appearance

Do not use this image as refference for their body shape, only the comic images are accurate. Those are the ones with black linework. 

They are hooved mammals with slender, elegant bodies. Their legs are long, slender and thin, unlike those of ponies. Their head shape differs from age and gender.

They have split hooves.

They have a dark nose.

They have big ears, the shape resembling that of a leaf.

Adult males have antlers, but antlers can sometimes appear on young deer and females as well. It usually indicates an abnormal level of testosterone. Antlers can be used for magic similar to unicorn horns, but their antlers fall every year so they don't rely on it too much, because they can't use their magic all the time. Their main magic source is their plant controlling potions.

It is very common for them to have markings on their body.

They have a fluffy tail covered in fur, unlike ponies, that have a tail made of hair.

Deer do not grow hair manes or tails. (They can be accepted it's preferably you don't give deer manes, as they canonly don't grow manes.)

Bases

ADULT FEMALE DEER

MALE DEER

YOUNG FEMALE DEER

ADULT FEMALE DEER 2 (BEST)

localization

before the great cataclysm

Settlement: The City of Thicket

Relationship with grifix: They are nighbors, allies and friends in the Everfree Forest with the grifix of the Everfree Village. The two settlements often interact and they even have shared holidayss which they spend together. It is very normal that grifix have deer friends. Grifix can sometimes live in the City of Thicket, while deer can live in the Everfree Village.

Deer don't interact with any other grifix settlement.

Relationship with other species: they find other species, such as ponies, to be disrespectful of nature, and they dislike their company. Because of that, they do not commonly interact with any other species. No deer have been reported to attend the School of Friendship. 

Deer do attend the Convocation of the Creatures. But that is the only time they leave the Everfree Forest.

Clothing and accessories: Most of them have a container filled with a magic potion around their necks, which helps them control plants. It is usually under the shape of a small barrel, with a tassel hanging from it.

After the great cataclysm

Unknown. Could be extinct, as the core of the Cataclysm was in Canterlot, very close to the City of Thicket.