Rex

The Rex is the iconic apex carnivore of ARK and the backbone of most boss teams. It combines a huge health pool with heavy bite damage. Bred Rexes with stacked mutations are what most tribes take into the Broodmother, Megapithecus and Dragon arenas.

Where to find it

• ASA: The Island, The Center and Lost Colony have spawn zones that hold only Rexes. It also appears on Astraeos, Valguero, Extinction, Ragnarok and Genesis Part 1.
• ASE: it spawns on Scorched Earth and Lost Island, and in mixed spawn zones on The Island, The Center, Valguero, Extinction and other maps.

Taming

A Rex is a knockout tame. Knock it out with tranquilizer arrows or darts from a safe spot, such as a high rock or behind a door frame, then feed it meat. Raw Prime Meat tames much faster than regular meat. Use our taming calculator for the exact food count and narcotics at your server's rates.

Breeding

• Egg: lays eggs that hatch in about 5 hours at default rates.
• Temperature: the eggs need warm incubation, 32 to 34 °C in ASE.
• Growth: a baby takes about 3.9 days to mature at 1x.

Uses

• Combat: boss fights, cave clearing and defense.
• Harvesting: collects Raw Meat, Raw Prime Meat, Hide and Keratin well.

Tips

Build its saddle early. For bosses, raise Rexes from a breeding line rather than taming wild ones, because mutations on health and melee add up.