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Swedish word igelkott comes from Old Norse ígull (Sea-urchin.), Old Norse kǫttr (A cat.)
ígull (Old Norse)
Sea-urchin.
kǫttr (Old Norse)
A cat.
ígulkǫttr (Old Norse)
*īghilkutter (Old Swedish)
igelkott (Swedish)
A hedgehog (animal).