As usual when Daisy looked outside for backyard wildlife, I could not see anything. I said there is nothing there . . . and then saw a brown thing with two black dots near the top. It sat on my patio like a frog, but looks like a mouse on flippers. I could not see separate elvows and feet in its front limbs; ithey closely resemble a seal or sea lion. It has ticked brown fur. The snout and tai match those of a mouse or rat. Any ideas what it could be?