The Wiki entry for human_on_anthro states that the tag must be used
When a human character is depicted romantically or sexually with an anthro character.
But the tag also implicates interspecies which the Wiki states must be used for
Sexual or mating activity between different species.
The current definition for interspecies doesn't allow for non-sexual inter-species activities, while human_on_anthro does. Either the implication should be removed or one of the definitions be reconsidered.
It must also be noted that the anthro_on_anthro allows for romantic activities, while anthro_on_feral and feral_on_feral do not.