The Finnish word for pet is "lemmikki" which comes from the old word "lempi" and means "favourite/favoured/beloved one". The long form is "lemmikkieläin" which means "favourite/favoured/beloved animal".
@Jem sorry i replied this late lol, but there is actually. Sällskapsdjur is a old Swedish word, nowadays we use "husdjur" which is as i typed, house pet
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