For months, these little playdates were a regular occurrence, much to the delight of all who witnessed them.
"To be able to see the interaction of Rio and the otter was truly a gift," Rio's owner says. "To be able to see their trust growing over a period of time on opposite sides of the fence made me know that when the otter did come under the fence, they would play and not be aggressive with each other ... pure joy!"
Like all good things, however, the happy interspecies festivities eventually ended, as one day the otter failed to come visit. And while it's been nearly a decade since then, time has done little to diminish the dog's sweet nature that allowed for such a friendship in the first place, says sasslang:
"Rio, being older, is slower, fatter, graying in his face ... but still the gentle soul he has always been."
Even in his older age, Rio continues to make new friends - this time, a raccoon.