No, it's not as simple as that.
Finnish and the Slavic languages are the only ones in Europe that have a native word for "elephant". (Everyone else uses variants of the Greek "elephas" or Arabic "fil".)
The question is, why those two languages and only those two?
What's worse, the Slavic word dates to proto-Slavic times, it's one of the basic animal words like "deer", "rabbit", "cow", etc.!