. Cassell's natural history. Animals; Animal behavior. THE TEETH OF TUB DOG. 97. ITEP TlE-\\ 01 ^^0L1 The great avclies of bone beneath thi. e\e aie i o%ving to the smaller size of the jaw mustier wluth longer, in correspondence with the increased number of the teeth. There will be no difficulty in making out the teeth of the Dog now we have studied those of the Cat. We shall find, as before, that there are in the small front bones of the upper jaw three teeth on each side, and the same number in the corresponding part of the lower jaw : these are, of course, the inci- sors. They are followed
. Cassell's natural history. Animals; Animal behavior. THE TEETH OF TUB DOG. 97. ITEP TlE-\\ 01 ^^0L1 The great avclies of bone beneath thi. e\e aie i o%ving to the smaller size of the jaw mustier wluth longer, in correspondence with the increased number of the teeth. There will be no difficulty in making out the teeth of the Dog now we have studied those of the Cat. We shall find, as before, that there are in the small front bones of the upper jaw three teeth on each side, and the same number in the corresponding part of the lower jaw : these are, of course, the inci- sors. They are followed by the •canines, or great eye teeth, of which, as in the Cat, there is one on each side of each jaw. After the canines, however, come no less than six teeth on each side of the upper jaw, and seven on each side of the lower. It is found that the fii-st four of these are repre- sented in the jaw of the young Dog by milk molars; therefore, as we explained in treating of the teeth in the Cat, these four are pre- molar, and the i-emaining three, molars. A likeness to what we find in the Cat exists in the fact that the last premolar of the upper jaw and the first molar of the lower jaw are very large teeth, and bite against one another. These are the carnassials of the respective jaws. Thus the dcntsil formula of the Dog is—incisors, |^, canines, J;^!, premolars, t^, molars, I5H = 42. The foi'ui of the teeth, as well as their niimber, comes much nearer to that of an ordinary Mammal, or is much less specially carnivorous than in the Cats. The incisors are proportionally larger than in our first section; their crowTis are distinctly divided into three cusps —a large central and tv/o small lateral ones; and the outermost incisors of the upper jaw approach tolerably nearly in shape and size to the canines, being nearly half as long as the latter, and having almost lost their lateral cusps. The canmes have much about the same form and relative size as in the Cat, as also have the p
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