When I was using Bigfoot my bronto, a therizino attacked becuase I accidentally dmged the theri, when I decided to attack it, I accidentally used my spyglass and then, I LITTERALLY ONESHOTED THE THERI, and it turns out, IT ACTUALLY WORKS ON ANY DINO (Mounted of course), this proves that the spyglass is more of a gigachad than u think. U can use this tip if u want to level up ur dino, OR get revenge on the Dino's u died from.