Core Hounds in Island Expeditions
Core Hounds can be a great pet to use in Island Expeditions -- especially if you don't have a tank in your group -- because of how many mobs they can tank at a time. The most important thing is to keep
Raubtierhiebe active all the time to increase their self-healing and help them keep aggro. You can also rotate their primary target for
Knurren taunts, which is useful for keeping aggro on elites/rares and any ranged mobs that may be just out of Beast Cleave range to prevent them from attacking you or your party members.
You have no control of when to use
Lavafell, but this ability does help a little bit with some extra damage (again, it scales with more targets).
Obsidianhaut has a short enough cooldown that it should be available for every major pull. And of course, you always have
Urtümliche Wut available to use whenever the opposite faction team ambushes you.