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caniformia
Caniformia, or Canoidea (literally "''dog-like''"), is a suborder within the order Carnivora. They typically possess a long snout and nonretractile claws (in contrast to the cat-like carnivorans, the Feliformia). The Pinnipedia (seals and sea lions) evolved from caniform ancestors and are accordingly assigned to this group. Most members of this group have nonretractile claws (the fisher, marten,〔(【引用サイトリンク】 publisher = New York State Department of Environmental Conservation )〕 red panda, and ringtail have retractile or semiretractile claws) and tend to be plantigrade (with the exception of the Canidae). Other traits that separate Caniformia from Feliformia is that caniforms have longer jaws and have more teeth, with less specialized carnassial teeth. They also tend more towards omnivorous and opportunistic feeding, while the feliforms are more specialized for eating meat. Caniforms have single-chambered or partially divided auditory bullae, composed of a single bone, while in feliforms, the auditory bullae are double-chambered, composed of two bones joined by a septum.
The center of diversification for Caniformia is North America and northern Eurasia. This contrasts the feliforms, the center of diversification of which was in Africa and southern Asia.
== Characteristics ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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