Poor ducks, their home is being completely modified to receive the new guest.
Also, it seems like the dog was indeed, lost, based in the Missing sign (Top right of the image, on the tree trunk).

The biggest Dog House you have ever seen.

Froggy Nun: "What is it my RRG friend, wh- Oh, no."

Oh, one duck already sleeps under a newspaper. Don't make the Ducks homeless, Clumsy!