What しとっても means here?

Question

陸ではのらくらしとっても水の中ではそりゃあ素早い

I don't quite understand しとっても form here.

I guess the whole sentence will be

Even though they're slow on land, they're very quick in water.

Is しとっても another form of していても or しておいても?

It might be dialect: https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1389225183 — Ringil, Dec 20 '18 at 20:55
Related (or possible duplicate?): https://japanese.stackexchange.com/q/25267/9831 / https://japanese.stackexchange.com/a/61180/9831 — Chocolate, Dec 21 '18 at 00:21

score 0 · Accepted Answer · answered Dec 21 '18 at 15:58

のらくらしとっても is a contraction of のらくらしておっても, which is a dialectal version of のらくらしていても.

In casual speech, て + おる contracts to とる.
This おる is the same as progressive-いる, but used mainly in western Japan. See: おる in honorific contexts

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