Spain was named by the Phoenicians after the huge number of rabbits they saw there. But they had no word for rabbit, so they used their word for hyraxes.

Which are, by the way, the closest extant taxon to the elephants. Which themselves are named just for their thick skin.

Hyraxes, in turn, look rather like chunky ferrets. As you say, they aren't closely related, but i suppose if you're a mammal which lives in holes in the ground, there aren't many body shapes which work.

As both Dutch and English are West Germanic languages, close cognates are pretty common