As far as I know animals do not have a concept of art. To have a concept of art would be to make something for the pleasure it brings oneself and others and not for a practical or survival based need. I have no experience with animals doing so and unless it could be shown to me that they do, they are not intentionally creating art. On the other hand various animals have proven to be quite intelligent and it does not seem like much of a stretch from there that some would be creative. In fact, after doing a little research, I found that elephants have been known to create art in zoo environments. This art may be because of human direction, and not because the animal intends to make anything. It is not really a concept of art then. It is more like following instructions.
There is a group called the Asian Elephant Art and Conservation Project that sells art created by elephants in order to raise money for the elephant’s preservation. Link to their website: http://www.elephantart.com/catalog/artstate.php
This article is about chimps that create art that is going to be displayed in an exhibit. It also says that the project to teach the chimps art was a way for them to combat the depression they seemed to have, so these chimps may even be using art as a way to express emotions. That seems to come pretty close to how we describe the seemingly human process and reasoning behind the creation of art.
If people used an animal to create art (say by getting an elephant to splash a paint brush across a canvas) would that be art created by the elephant or would the elephant be more like the utensil that the person was using to create art?