The individual hair of the underfur is cylindrical and tapers abruptly at each end; it is short, thin, flexible, and usually is bicolored on the back and sides of the mouse.
The guard hairs and underfur differ in different species (see figs.
The width of a hair in the underfur is of no taxonomic significance, in that individual variation exceeds that between species.
Schwalbe's (1893) work, including sectioning of the skin and study of the hair follicles, led him to conclude that the underfur was molted twice each year in Mustela erminea.
These animals depend on an air blanket trapped in their dense underfur for warmth and buoyancy.
Any form of pollutant, especially oil, could penetrate the outer guard hairs and underfur and allow water to reach the skin, with disastrous effects.
In mice in the earlier stages of adulthood, underfur of the dorsum is buffy at the tips and gray basally.
The underfur is thick and fine, the guard hairs coarse and conspicuously shiny.
The winter garb is put on early in the fall; it consists of a heavy coat of brown woolly underfur with guard hairs that vary from gray on the sides to almost black on neck and legs.
The soft, rich underfur is partially concealed by coarse, rather stiff guard hairs.
The long guard hairs protected the face from the bitter air without collecting frost, and the underfur did not collect snow and frost like other furs.
Color: Lighter, terminal bands of hair cinnamon, but because more black in underfur the animals appear darker; postauricular patches smaller and lighter.
All of these animals are in worn pelage, thus allowing a great amount of the black underfur to show, which gives a markedly darker color.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "underfur" in a variety of sentences. We hope that you will now be able to make sentences using this word.