1. A method for automatically generating contextual animal image tests implemented on a computer, comprising: receiving, by a computer, an animal image; dividing, by the computer, the animal image into objects such that the objects can be selected; selecting, by the computer, for replacement an original object from the objects; replacing, by the computer, the original object with a similarly shaped replacement object, the original object being swapped for the replacement object in the animal image, wherein the replacement object is an abnormality in the image; identifying, by the computer, the objects that represent animal sensory features of an animal that is non-human in the animal image; in a first case, removing by the computer the animal sensory features of the animal in the animal image to cause the animal in the animal image to visually display without the animal sensory features based on a visual context of the animal in the animal image calling for the animal sensory features to be displayed; in a second case, duplicating by the computer the animal sensory features of the animal in the animal image to cause the animal in the animal image to visually display with an additional animal sensory feature based on the visual context of the animal in the animal image not calling for the additional animal sensory feature, and, wherein the replacing, removing and duplicating are based on prior history of relative success.