Talk:Dragons: Race to the Edge, Season 6/@comment-34723394-20180217083926/@comment-31135394-20180217091210

We see Krogan do the same thing to a Singetail in "Living on the Edge" which knocks it unconscious, so he may know it's just a general vulnerability of all dragons. Fishlegs also does it to a baby yak and Snotlout when he's hypnotized as Thor Bonecrusher, so it's kind of suggested that it could be a trait all large vertebrates have.