The tip of the tail is black with white underfur.

Long outer hair covers a short, dense, black and white underfur.

The pelage is long and silky with a dense underfur.

There is no underfur, and the skin is black.

It differs in having grey rather than white bases to the hairs of the underfur.

The lightly coloured underfur is not equally visible on different parts of the body.

The pelage is shorter than that of northern wolves, and has little to no underfur.

The underfur which is soft and dense, serves primarily as an insulator.

They are intermediate between the soft underfur and the guard hairs of the topcoat.

Like shrews, it has a pelage with guard hairs and underfur.

The underparts were white, with lead-colored underfur that was visible in some places.

On the back and hindquarters, the underfur is almost completely covered by the dark guard hairs.

In typical erythristic individuals, the underfur is usually bright reddish.

They are marked by their dense underfur, which made them a long-time object of commercial hunting.

This 10 inch long mole is dark chocolate brown above with whitish underfur.

Microbats lack underfur; they are either naked or have guard hairs.

The skins and underfur of rodent prey are used to line the nest chamber.

They have very soft, insulated underfur, which is protected by an outer layer of long guard hair.

The hair of the underfur is brown at the base, and silver grey tipped with black further along the follicle.

In winter, the coat is fairly dense, soft, and has well-developed underfur.

Longtusk had a dense underfur of fine woolly hair that covered almost all his skin.

The fur is soft, with dense underfur and long, coarse, thick guard hairs.

The Cape ground squirrel has black skin with a coat is made of short stiff hairs without underfur.

The hair appears to have been a very advanced dense pelage including guard hairs and underfur.

Wolves in warm climates have shorter guard hairs and less dense underfur.