Still life emerged from the painting of details in larger compositions with subjects, and historically has been often combined with figure subjects, especially in Flemish Baroque painting. The term includes the painting of dead animals, especially game. Live ones are considered animal art, although in practice they were often painted from dead models. The still-life category also shares commonalities with zoological and especially botanical illustration, where there has been considerable overlap among artists. Generally a still life includes a fully depicted background, and puts aesthetic rather than illustrative concerns as primary. Still life occupied the lowest rung of the hierarchy of genres, but still has been extremely popular with buyers. As well as the independent still-life subject, still-life painting encompasses other types of painting with prominent still-life elements, usually symbolic, and “images that rely on a multitude of still-life elements ostensibly to reproduce a ‘slice of life’. The trompe-l’œil painting, which intends to deceive the viewer into thinking the scene is real, is a specialized type of still life, usually showing inanimate and relatively flat objects.