So, here are some dinos that give 100% trust: Rex, Spino, Bronto, wyvern, and a Giga. Best options will be Rex, or Bronto, because they take longer to be harvested by dragonflies. If you find a carcha above 130 (I've found yesterday, on 15 February 2025 a beatiful Carcharo on 145), YOU HAVE to tame