This article is written with sound scientific objectivity. However, I still find it accepts certain norms and a anthropocentric (human centric) attitude that desperately need reexamination.
For example, on the issue of whether zoophilia is "animal abuse" and cruelty, the argument remains among humans, the majority of whom admit to no actual direct experience with such activities.
A true scientific study would require the observation of the actual activity and the animal's reaction to the acts. Does the animal show fear or try to avoid the contact? Is there any evidence of pain being inflicted? Does the animal show signs of pleasure or of initiating the contact?
Society may not be ready for the answers such a study would produce!