In 2012 when we went upNorth for our vacation... Weezie was our only cat. Oreo had just gone to the Rainbow bridge, losing her battle and remission with cancer. Oreo would have protected Weez, but she had just been put down before we left. The vet didn't think the trip and location would be advisable and she was terminal anyway... sigh.

We have gardening stuff under our old dock up there. The second day (over a weekend) Weezie became very ill. The following Monday a local vet who was a ferry ride and 30miles away squeezed us in. He couldn't find a bite but her fever was very high so he gave her a special long acting antibiotic shot (thinking she had a bite somewhere). 3 days later the abscess appeared and we went back and he said he thought it was a shrew bite. But after reading this article about the weasel I think she spooked one upon our arrival who was living under the dock (this dock is on dry ground since the water levels retreated many years ago.). I noticed lots of squealing at US that first day too. Initially I thought she had a run in with a mink as we have those commonly too. But the bite location and tiny tooth injury which could not be seen by the vet initially, leads me now to think it could have been a weasel.

She scratched the fur off as the abscess healed, and here is a photo of it: I think our mystery animal was indeed a weasel, now. They can be ferocious and Weez had never seen one before. The location of the bite, suggests this. She has brought small rabbits to us, and chipmunks, so I can see her trying for a weasel too.