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In the aged ruminant, two bones are commonly found in the heart, and may be termed the cardiac bones. They are found related with auriculo-ventricular rings. In shape they present three angles, three borders, and two surfaces. The left bone is somewhat smaller than the right.

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Animals eating both vegetable and animal food.

The omnivora are represented in veterinary anatomy by the hog.

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An order, suborder, or family of mammals, especially wild animals, including the dog and cat, etc. Animals that eat flesh.

In this order our description alludes mostly to the dog.

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The scope of the present work will allow only very brief treatment of this part of the subject.

Of or pertaining to Birds, Poultry, Etc.

The bone tissue or substance of birds are exceedingly compact and hard, white in color; and some of the bones are pneumatic, or contain air instead of marrow, notably these are bones of the skull, the sternum or breast bone, and the upper bones of the limbs. There are a great variety in the amount of pneumaticity or air possessed by the skeleton of different species, but it is not necessarily determined by the flying power of the animal.