Articles: Art Made by Non-Human Animals
Elephants That Paint, Birds That Make Music Do Animals Have an Aesthetic Sense?
Gisela Kaplan, Ph.D., and Lesley J. Rogers, D.Phil (Dana Foundation)
Related animals: Bird, Chimpanzee, Elephant, Seal
Interesting text about the issue of animal art. A bit lacking in terms of the understanding of art but a lot of good questions are asked.