"I can't believe there's an otter living in Edinburgh."
They're more common than the lack of sightings would indicate. The Water of Leith has them pretty much along the whole length (though I've never seen one, but a friend filmed some around Canonmills, and I've seen photos from right down at the Shore, and I think some live around the Water of Leith centre); they're also on the canal; and have been seen a fair amount on Duddingston Loch, but getting seen LOTS now. I will be back this weekend.
Oh, and there was one filmed by the CCTC camera at Cameron Toll shopping centre last year. Otters are doing very well in Edinburgh just now!
Can't watch that video here, but there was a guy I had a quick chat with at the weekend who had a video camera digiscoped and had been watching them play in the morning. Seems they're ranging over the whole Loch just now, so there's not really a best spot to see them.
Need to get a picture of the city's badgers next... (I know of one pinoint location having seen them there, off the Trinity Path - they're also on Corstorphine Hill where I believe the Scottish Wildlife Trust does feeding walks).