These guys will be your best friend.
I am not joking.
I play mobile, single player, and I have one named Butch, tamed him when I was at level 20 something and him level 17 I believe, he’s now level 43 and the only place he doesn’t go with me is underwater and caves.
Do no be scared grabbing one, I was terrified taming Butch, but in all honesty he wasn’t that bad, I was just paranoid. While narcotics are good to use, I find biotoxin even better and it easily knocks a spino nearly back to full tempor.
I used a crossbow and stood on a sharp cliff face, letting butch run around and kill the other animals in the water, which did actually distract him long enough to knock him right out. I highly suggest trying to grab one in the easier areas, mine being from the Long: 40 Lat: 80 area. Here you can easily get biotoxin too, as the jellies spawn in the area pretty frequently, it being a low level area and they’re easy to get to with a crossbow!
Happy taming fellow survivors, good luck!
I had a Spino once. His name was J.J. I loved him. But like always, good things always come to an end. We were out looking for giant turtles for their keratin when J.J. fell over the edge of a cliff. I was on my pteradon so I flew over the edge and J.J. was following me back to bace when he was killed my a therizinosaurus... I just sat there on my pteradon watching him be torn apart, unable to help... So now, my bace is called Fort J.J. in honor of him. I will always remember my most loyal friend.