If you were needing a new excuse for, well, anything, this is a good one. People are going to assume you wouldn’t make it up, because if you did say an animal attacked you, surely you would’ve picked something bigger, like a grizzly, or a medium-sized dog.
See, we want to think of otters as being cute loving creatures like this, but instead they’re evil attack monsters that bite you while you’re innocently training for Ironman competitions.
Obviously they are intelligent, devious creatures that lull us into submission and then chomp into our tasty manflesh. Rather like cats when they lie on their backs, daring us to scratch their bellies. It’s a good thing the Vancouver Aquarium has that glass up around the otters; obviously it is to protect humans from their subconscious desire to scritch scritch.