Horsetail, not dog tail. Why are you here?
I am a horse though, an ex polo pony qualifies. You are a dog and I wonder how you got drawn in.

Equisetum is older than dogs, older than dinosaurs and the whole page fails if you are in it. Of course your tail is pretty hilarious. Persons dislike horsetail for its rampant spore induced land grabbing, and persons like to eat it, and horses can be poisoned if they eat enough of it. So a pretty mixed bag of emotions with the ol’ living fossil malarky.