the
first month the entire eight incisors have appeared.

[Illustration: FIG 1.--Internal face of incisors of the calf.]

As the animal approaches 2 years of age the center pair of temporary
incisor teeth or pinchers are replaced by the permanent pinchers which
at 2 years attain full development.

[Illustration: FIG 2.--Internal face of incisors at 2 years.]

At from 2-1/2 to 3 years the permanent first intermediates are cut and
are usually fully developed at 3 years.

[Illustration: FIG 3.--Internal face of incisors at 3 years.]

At 3-1/2 years the second intermediates or laterals are cut. They are on
a level with the first intermediates and begin to wear at 4 years.

[Illustration: FIG 4.--Internal face of incisors at 4 years.]

At 4-1/2 to 5 years the corner teeth are replaced, the animal at 5 years
having the full complement of incisors with the corners fully developed.

[Illustration: FIG 5.--Internal face of incisors at 5 years.]

At 5 to 6 years there is a leveling of the permanent pinchers, the
pinchers usually being leveled at six and both pairs of intermediates
partially leveled and the corner incisors showing wear.

From seven to eight the pinchers are noticeably worn; from eight to nine
the middle pairs, and by ten years the corner teeth.

After 6 years the arch gradually loses its rounded contour and becomes
nearly straight by the twelfth year. In the meantime the teeth have
gradually become triangular in shape, distinctly separated, and show the
progressive wearing to stubs.

[Illustration: FIG 6.--Internal face of incisors at 12 years.]

End of the Project Gutenberg EBook of Determining the Age of Cattle by the
Teeth, by George W. Pope

*** END OF THIS PROJECT GUTENBERG EBOOK AGE OF CATTLE BY TEETH ***

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