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座敷犬	6517	99.3%
ざしきいぬ	43	0.7%
ざしきけん	0	0.0%

daijs:
https://dictionary.goo.ne.jp/word/座敷犬
ざしき‐いぬ【座敷犬】 の解説
散歩に出るとき以外は室内にいる犬。室内で飼う犬。小形犬が多い。

https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1271500182
座敷犬って言いますか？
先日、県外に旅行した時、見知らぬお婆ちゃんに声をかけられ少しお話しました。「座敷犬でしょ？」と聞かれ方言もあり
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A: 方言ではなく、昔からある言い方です。
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I misguessed the reading and double checked. If you have a ref for  けん, you could put it back, but I've found no evidence.  All online refs give いぬ.  Not in sankoku. My IME doesn't complete ざしきけん either.

See last ref (yahoo) for [dated] suggestion. Conversation between two apparent Japanese natives, one who hears the expression from an old woman and doesn't recognize it, another who explains its former relevance.

Makes sense to me.  In modern times, nearly *all* Japanese dogs would be 座敷犬.  This is opposed to dogs who used to be kept outside of the house (for cleanliness/etc.).  But that's not much of a thing anymore, so it would seem this word has lost its utility.

Nico-video has a similar explanation as the yahoo conversation:
https://dic.nicovideo.jp/a/座敷犬
late-showa to earlier-heisei:
ザシキイヌ
犬の室内飼いが珍しかった昭和末期～平成初期まで、室内で飼う小型犬に対して使われた言葉。
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@@ -8 +8 @@
-<reb>ざしきけん</reb>
+<reb>ざしきいぬ</reb>
@@ -11,0 +12 @@
+<misc>&dated;</misc>

Entry created