Canis familiaris, var. Collie
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English: Dog
German: Hund
French: Chien
Spanish: Perro
Distribution areas
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The domestic dog is the product of
ancient crossbreeding among different
canine carnivores and now exists in an
extraordinarily large number of varieties.
The collie race has a long body with coarse
long hair, brown-white or black-white in
colour. This race is bred in all of the The surface structure
inhabited continents. of the skin, 200x
Description of the fur
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The skin of the collie are maximally 150 cm long and are covered with
coarse hairs. The longest hairs are 35 to 70 mm long. The fine under-fur
fibres are present but a separate layer is not distinguishable. The hair
shafts are straight.
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Canis familiaris, var. Collie
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English: Dog
German: Hund
French: Chien
Spanish: Perro
Structure of the hair
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The microscopic structure of the skin
surface appears furrowed, and the upper
part of the follicle is wide with sunken
edges. The hairs usually emerge from the
follicles in groups; only some guard hairs
are single.
Longitudinal section
The fine fur fibres are circular in of an intermediate fibre, 1000x
cross-section and their diameter is from 18
to 26 µm. The cuticular scales are cornet-like with irregular grooved
surfaces and smooth margins. These fine fibres are almost all medullated with
a narrow unbroken and central symmetrical-shaped medulla. The overall
medullar structure belongs to the needle-like type with a fibrous, granular
and amorphous infilling substance.
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Canis familiaris, var. Collie
-----------------------------
English: Dog
German: Hund
French: Chien
Spanish: Perro
The intermediate fibres are from 50 to
70 µm in diameter and have a circular or
ellipsoidal cross-sectional outline. The
cuticular scales are of an even tile-like
type with smooth margins. The scale surface
is of the non-regular grooved type. These
fibres have a medulla which is
central-symmetrical shaped in
cross-section. The medulla is wide and The cuticular structure
longitudinally unbroken. The overall of an intermediate hair, 2000x
structure of the medulla is of the lattice
type with a needle-sheet-like infilling
substance.
The guard hairs are ellipsoidal in cross-section with a diameter of from
80 to 140 µm. Their cuticules are of an even tile-like shape with a smooth
scale surface and rippled scale margins. The medullar structure is usually
very wide, unbroken and of the central symmetrical shape. The medullar column
is of the lattice type with a needle-sheet-like infilling substance.
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Canis familiaris, var. Collie
-----------------------------
English: Dog
German: Hund
French: Chien
Spanish: Perro
Longitudinal section
of a guard hair, 400x
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Canis familiaris, var. Collie
-----------------------------
English: Dog
German: Hund
French: Chien
Spanish: Perro
The cuticular structure
of a guard hair, 600x
Numerical code for collie skin structure
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Surface of the skin: 3-1-3
Fine fur fibres: 1-5-3-1-3-1-1-15-6.7-18.26-15.35
Intermediate fibres: 2.1-2-3-1-2-1-1-8-3-50.75-30.55
Guard hairs: 2-2-1-2-2-1-1-8-4-80.141-50.71
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