| Gray wolves have a dense underfur layer, providing them with excellent insulation against cold conditions. |
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| When you look at fur, especially the really dense fur of mammals, you look at that underfur, and it looks like down. |
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| The fur of a dassie rat is soft and silky, but there is no underfur. |
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| The pelage consists of a dense, soft underfur overlaid with dark and glossy guard hairs. |
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| The fur is composed of short, soft underfur covered by shiny guard hair. |
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| The fur of sea otters is very dense with an insulating underfur and a layer of long guard hairs over the top which trap a layer of air, adding further to the insulation. |
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| The pelage lacks underfur and is usually some shade of brown. |
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| Wolves in the Arctic have extremely dense underfur, which insulates them against rigorous winters. |
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| The yellowish or reddish brown coat contains coarse guard hairs overlying soft, dense underfur. |
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| Dense fur, a mixture of permanent underfur and longer top hairs that are shed annually, covers the rest of their body. |
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| Also equipped with a layer of underfur and a layer of transparent guard hairs, these bears are prepared to swim and hunt in the coldest climate. |
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| The short underfur is dense and silky, while the longer guard hairs are coarser and glossy. |
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| Its fur is very dense, consisting of a mat of fine underfur about 2 cm long and an outer layer of heavy guard hairs about 7 cm long. |
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| He would be pleased today to see that Kiviuk, the underfur of the muskoxen, is being woven into wool finer than cashmere. |
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| Finn raccoon has long, thick tan guard hair with black tips and dense underfur. |
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| The red fox has a coat of long guard hairs, soft, fine underfur that is typically a rich reddish brown, often a white-tipped tail, and black ears and legs. |
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| On the back and hindquarters, the underfur is almost completely covered by the dark guard hairs. |
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| The limbs are pure black or black with brown tints, while the tail is black or blackish brown, completely lacking light underfur. |
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| In typical erythristic individuals, the underfur is usually bright reddish. |
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| Their thick winter coats, with glossy guard hairs and dense underfur, and the thick layer of fat beneath their skin protect them against the cold. |
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| The gray wolf has very dense and fluffy winter fur, with short underfur and long, coarse guard hairs. |
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| Most of the underfur and some of the guard hairs are shed in the spring and grow back in the autumn period. |
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| Southern is flatter with little underfur and is usually pale in color. |
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| New Jersey is lighter in weight with contrasting colors while Northern has longer guard hair and heavy, thick underfur and is often worked skin-on skin. |
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| The lightly coloured underfur is not equally visible on different parts of the body. |
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| A thick underfur develops in cold weather. |
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| Because of the fur trade's demand for the nutria's plush underfur, persistent hunting in the 19th and early 20th centuries caused populations to decline. |
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| Its fur coat is soft and silky with a thin underfur which rarely tangles. |
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| The grey fur is a grizzled salt-and-pepper combination produced by lead-grey underfur, overlain by banded grey and black guard hairs tipped with white. |
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| They are marked by their dense underfur, which made them a long-time object of commercial hunting. |
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| Polar bear fur consists of a layer of dense underfur and an outer layer of guard hairs, which appear white to tan but are actually transparent. |
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| Coarse guard hairs mingle with soft underfur. |
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| They have very soft, insulated underfur, which is protected by an outer layer of long guard hairs. |
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| They kept warm with long, thick hair and woolly underfur. |
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| This division was based on the most prominent common feature shared by the fur seals and absent in the sea lions, namely the dense underfur characteristic of the former. |
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| The skins and underfur of rodent prey are used to line the nest chamber. |
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| Preserved in the fossil is a clear halo of guard hairs and underfur residue, making Megaconus only the second known pre-mammalian fossil with fur. |
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