Rustic art isn't considered a thematic category of art, many of the works that characterize this type of art are country life pictures. These images often feature whimsical prints of country lifestyles, as seen in the work 'Farm Pond Reflections' by Raymond Knaub, and are considered one of the most iconic parts of this art category.
Rustic art often involves some form of domestic animal image. These works often feature farm animals, however in some works, like 'Ides of March' by Andrew Wyeth, domesticated pets are displayed. These country life pictures can either feature groups of animals, like in the whimsical print 'All My Friends' by Lowell Herrero, or as a single domestic animal image, as seen in the print 'Rustic Farmhouse Rooster I' by Kimberly Poloson.