The King Crab has a reddish shell and red-orange body, its pincers, legs and spikes are also reddish, some of them are a darker shade.
Use your Arm Smash to fight Krakens. When it uses its whirlpool, turn to face it so it can't Tailbite you. When it's over, arm smash it, make sure if it dosen't dive, then dive under it and Tailbite it while it is stunned. Repeat the process until you kill it. If it is winning, dive and retreat. If you see a Kraken near land, smash it onto land and don't let it get back into the ocean. The Kraken will die of thirst quickly and you get lots of XP.
If you want free food go after a Turtle or some other low level animal. Use your arm smash which will weaken it greatly. Then kill. If you want to get great amounts of xp, hunt for blue whales. Your Arm Smash stuns animals for a very long time, making them easy to kill. If you see a pod of blue whales, don't take the risk. Also try dominating a lake for easy xp.
When fighting Dragons, dodge their fire and Arm Smash it. Dive underwater when your ability needs recharge. At some point, one of you will be winning. If you are not, go underwater, for you have a superb dive time. If the Dragon is losing, chase it and Arm Smash it until it is dead.
Try not to get close to T-REX since your attacks are more ranged than the T-REX's. When you get close to each other, Arm Smash the T-REX and tailbite while it is stunned. Stay on hills if possible but not to close to the T-REX. Keep Arm Smashing it until it is dead.
When fighting The Yeti!, dive underwater and then Arm Smash it. You will probably lose if you face it on land. If possible, Arm Smash one with low health to kill it.
If you see a Black Dragon flee if it has about full health. If it has low health or you are teaming up with other King Crabs, this will be a great opportunity to get a Black Dragon kill. Arm Smash it to kill it, if it goes in lava or it blocks you in a hole, you dont have a big chance.