. Age of the domestic animals : being a complete treatise on the dentition of the horse, ox, sheep, hog, and dog, and on the various other means of determining the age of these animals. Domestic animals -- Age; Teeth. ERUPTION OF THE PERMANENT TEETH. 199 Two to Four Mouths.—A month before the eruption of the permanent teeth the temporary pinchers and often the inter- mediate teeth in both jaws become loose and fell out; at this time the points of the permanent teeth can be felt by pressing on the gums. (Fig. 180.) ERUPTION OF THE PERMANENT TEETH. The permanent teeth replace those of first dent
. Age of the domestic animals : being a complete treatise on the dentition of the horse, ox, sheep, hog, and dog, and on the various other means of determining the age of these animals. Domestic animals -- Age; Teeth. ERUPTION OF THE PERMANENT TEETH. 199 Two to Four Mouths.—A month before the eruption of the permanent teeth the temporary pinchers and often the inter- mediate teeth in both jaws become loose and fell out; at this time the points of the permanent teeth can be felt by pressing on the gums. (Fig. 180.) ERUPTION OF THE PERMANENT TEETH. The permanent teeth replace those of first dentition several months earlier in the large races of dog than in the terrier varie- ties. Medium-sized dogs, setters, etc., make the change later than the large dogs and earlier than the Fig. 179. Fig. 180. Fig. 179.—Teeth of puppy two months old. Fig. 180.—Teeth of dog four months old ; the incisors are loose and ready to fall out. Fig. 181.—Teeth of dog one year old, showing the incisors and tushes fresh and unworn. Five to Eight Months.—According to the race of dog, the permanent teeth appear rapidly in the following order: pinchers, intermediate, corners, and tusks. The incisors do not come out obliquely, as in the herbivora. It is worthy of note that, while the herbivora do not have all of their permanent dentition until they have arrived at their full development of body, the car- nivora have theirs long before they have attained their growth and before the consolidation of their bones. One year.—For the first few months after their appearance there is no alteration in the teeth; at one year they are pure white and the tubercles on the incisors are intact. (Fig. 181.) Fifteen Months.—From fifteen months on, commences the wearing away of the teeth. Tliis is first seen on the inferior. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustra
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