I'm not sure how well this will turn out, but to explain: There is a Beaver from a near-by creek, down at the beach in the evening, and a local female Golden Lab, who play Cat-and-Mouse every day. The beaver will swim away from the dog, but let her catch up until she's just about up to him. Then it slaps it's tail and DIVES! (that's what has just happened, as I took the picture.)
The Lab will swim in circles looking for the beaver, until it surfaces about 30 seconds and 50 feet away. Then the whole thing starts all over again. This can go on for an hour or more....
Once in a while the beaver really puts the Whammy on the dog, by swimming underneath the floating dock. The dog can't follow, so it swims to shore and runs up on the dock, sniffing through the boards and getting half-snakey when she gets the scent!
I overheard someone on the beach the other day chuckling as he told another guy "She's been trying to catch that beaver for 3 years now - just doesn't get the message!"