The language code used here correspond to the ISO 639-1 standard :
日本語 (ja) • Русский (ru) • Deutsch (de) • English (en) • Español (es) • Français (fr) • Italiano (it) • Nederlands (nl) • Polski (pl) • Português (pt) • Svenska (sv) • (See http://wikipedia.org/ for other language codes)
To propose a page to be translated, type below after the slash ('/') the name of the article in English and follow the instructions.
Interest of the translation: There is very little (five lines) information about non-human sleep on the English Wikipedia. The article in Swedish is well referenced, and of appropriate length. Further reasoning can be found at Talk:Sleep#Sömn hos djur (Sleep in non-humans)