My tribe lives right outside the swamp biome and these damned things are a Menace. They've killed my members dozens of times and they surrounded our mounts and killed them. Do not take them lightly they are cold blooded killers and are efficient at it.
My personal favorite Dino in the game. But when wild they are like "HOLY CRAP THEY ARE SO OVERPOWERED AND STRONG OMG I NEED ONE IT CAN PROBABLY KILL A GIGA" Once tamed it's like "This this can barely kill a raptor". Their only use is for fun and pulling players off their mount.
I tamed a lvl 150 using flak armor. I purposely let it bite me, then i spammed out with trank darts. With the small amount of dmg they do it can not hurt you if you use flak. And you get to go for a ride!