rat like creature in downtown seattle

I’m near the aquarium, close to Pike Fish Market area. It was dark and I saw a rodent like creature scurry across my path into some bushes. It could have been a rat, it was the same size and configuration, but I noticed it didn’t have a rat like tail, and in fact didnt seem to have a tail at all…or it had a very small tail. It also seemed ‘stockier’, and more fat/round than elongated like I would expect a rat. It happened so fast and I didn’t get a good look at it, but it almost looked like a lagomorph of some kind, but was probably a rodent.

Any ideas, so I can impress my friends with my knowledge of the local fauna?

Couldn’t it have been a rat that lost its tail in a fight or an accident?

it could have, of course. But if there is another creature (vole?) that fits that description without having to lose its tail, than that might be a better bet. I see that Seattle is the 7th worse city for rat infestation, so that is still a primary suspect.
But I wondered if there was some other critter I wasn’t familiar with in this area.

Here’s a page from a Seattle animal control company with pictures of various things they’ve trapped:

Nutria are also, via escape, common in the Pacific Northwest — I saw them from time to time in the Willamette valley, and they’re apparently in some parts of Lake Washington. They’re stocky, round, rat-like creatures without so prominent a tail. Might it have been one of those?

Offhand, I can’t think of any small animal that would be more likely in a city than a domestic rat lacking a tail.

Although voles have shorter tails than rats, they wouldn’t look tailless, nor would they be likely in a city downtown area.

The so-calledMountain Beaver or Sewellel lives in the Pacific Northwest and is virtually tailless, but it lives in forests. You would never see one in a large city.

You could tell them you saw a manx rat, but it’s more likely it was a regular rat that lost its tail due to injury.

Or maybe a feral guinea pig? Those things are deadly.