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Carnivore Families |
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Cats are carnivores and there are 286 species of carnivores. These are
classified into 15 families. Each comprises a group of species more closely
related to one another than to the members of other families. The 15
families are grouped into 2 major suborders reflecting a major separation that
occurred early in Miacid evolution.
The classification of carnivores is still hotly debated. Seals, sea lions and
walruses are sometimes accorded their own full order, "Pinnipedia". Some
recently reclassified families (red pandas and African palm civets) are not yet
accepted by all authorities.
Even the number of species remains unclear. The classification presented
here follows the standard reference for mammals, Wilson & Reeder (2005).
What makes a carnivore? They have carnassials that slide closely past one
another, slicing off chunks of meat as efficiently as a knife. This tooth
first made its appearance 60 million years ago from a group of small predators
called Miacids. Modern cats do not have the same dentition as dogs or
other carnivores of the Caniformia family. They have lost their rear molars or
retain them as useless pegs. They have little crushing ability and can
handle mainly meat.
Their carnassials are in the back while those in dogs have theirs behind
premolars and have 2 pairs of crushing molars behind the carnassials. This
results in dual-purpose dentition that both shears and crushes. This
allows bones, insects, seeds, fruit, and plant matter to be eaten. Cats
are considered to be the most predatory of the carnivore families due to their
dentition and also the make-up of their physical bodies. In a handful of
species in the carnivore families (Caniformia), the carnassial shear has been lost entirely
and they are completely herbivores (red panda and giant panda). Although true, their ancestors had
them as do some of their living relatives.
RESOURCES I HAVE USED AND ALL RIGHTS RESERVED AND ACKNOWLEDGED. ALL TEXT COPYRIGHT MATERIAL. NONPROFIT EDUCATIONAL SITE ONLY:
Hunter, Luke. 2005. Cats of Africa. John Hopkins University Press, MD. Pgs 34, 38, & 39.
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