It's quite hard to tame of these bad boys, unless you know how to do it. Spinos get distracted EXTREMELY easily, even a coel will make them stop chasing you, so by FAR the best way to tame them is to trap them. Use 3x3 stone foundations. then build 12 doorframes on each side as walls, and put a ramp big enough for the spino to walk on. You know, the classic trap. Kite them into it(the have a big turning raidos on all 4, so take note of it) and then trap them. They are quite fast so use something fast too, like an argy or ptero. Then, once trapped, knock em out with tranq darts, and give them exceptional (or argy kibble on mobile) kibble, if u can't get that use raw prime fish meat. Once tamed (it will take a while, get at least 300 narcos, even if ur using kibble) and once tamed, slap a saddle on it and ur good to go!

More Spinosaurus Taming & KO Tips