This grouping is unified by its subject matter --- with all of the artwork portraying dogs.
In the two photos above, groupings of several different oils paintings are both classic and elegant.
And the simplest type of grouping, but very effective, is to use a set of several companion pictures hung as one unit, evenly spaced both vertically and horizontally.
We are happy to help you anytime with a grouping for your room --- be it classic or transitional. We can begin with pieces that you have, and add to them, or start from scratch. It helps to bring in a picture of the space(s) you are trying to fill and color swatches of anything already in the room. Why don't you add a new grouping to your home today?!