How realistic is it that cultures on different planets influenced each other?

If two (or more) planets are within travel distance from each other and they often trade with each other, how likely is it that these planets cultures influence(d) each other?

For example: On planet A the dominant species is cat-people who like to do cat-things like cat-nip, yarn, etc.. They trade with the people from planet B, which is only a "short" traveling distance away and ideal for trading, a species of dog-people, who like to do dog-things like fetching and bones. Is there a chance that the dog-people from planet B adapt the customs of the cat-people?

On earth we can often see the influence of other(often long dead) cultures, like the greek or roman, in modern cultures, but how would that apply to planets?

posted over 9 years ago

Libellendrache‭

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