Be extremely careful about the giga’s rage. When a giga (tamed or not tamed) takes too much damage at once or gets to low health it’s eyes will glow. There’s nothing you can really do in this situation except just hide and pray. When it rages it will turn on everything, even you if it’s tamed. It’s DPS goes up to a dangerous level. While it only lasts 20 seconds that more than enough time for it to wreak havoc on you and your tames. To avoid this, I recommend building a metal sort of base with a Dino gate for your giga so enemies can’t make it rage on you, or just cryopod it if that’s available.