Sci-fi short story where bear-like aliens try to invade Earth but it comes out that excepting hyperdrive technology, (which the author suggests to be primitive near to the wheel concept and not being discovered by us just occasionally) their technology corresponds to what Earthlings had around 19th if not 18th century.

Some unique details:

- the story is quite short as far as I remember, maybe 3-5 pages
- aliens look bear-like
- their weapons are very close to [muskets][1]
- as alien ships have only primitive sewerage facilities, the story points a couple of times to how much they stink.
- at the end of the story, two captured aliens are shocked by the knowledge how much powerful will Earthlings become with the hyperdrive technology they have now (because with exception of hyperdrive Earthlings seem to them the most advanced tech civilization compared to other civilizations they know)


  [1]: https://en.wikipedia.org/wiki/Musket