Here Comes Trouble by Corinne Demas, pictures by Noah Z. Jones is a follow-up to Always in Trouble, by the same author.
Poor Toby, the dog, has to deal with the neighbor's cat, Pandora when the neighbors are on vacation. Pandora gets away with everything, but Toby has to save Pandora in the end.
This story will fit right in with a pets theme or learning to get along. The illustrations appear to be digitally rendered, they are bright, simple, and appealing.