I was hunting stuff with my Sarco on Herbivore Island waiting for my twin Rexes to get ready for more imprinting. I was using the Target whistle and I whistled for my Sarco to attack a Brontosaurus. Long story short, the Ankylosaurus I keep there for metal mining heard the whistle and started to attack the Brontosaurus. The Sarco is very capable of killing Brontos, but it couldn’t kill the Brontosaurus in time to save the Ankylosaurus. One up = one F in the chat for my Ankylosaurus that served me for about 200 days