SSJG said:
Tags are based mostly on visual details. There is no need to have tag for every animal species' ears when a lot of them are indistinguishable form each other. Tagging coyoye ears as dog_ears is not mistagging, it's a compromise that needs to be made in order to not have ultra-specific tags that only apply to a couple of characters. These compromises are common to all types of tags, not just animal-related.
dog_ears effectively works as canine_ears (and yes, wolf_ears are also very similar to most dog_ears and may or not be aliased in the future, but it's probably protected by its age and being associated with a lot of classic characters).
Then canine ears would be better and more accurate. Calling a wolf a dog is like calling a tiger a house cat.