As far as I know, only 3 wild carnivores will aggro onto the sight of your spino, other Spinos, Rexes, and Gigas. You can probably outfight other spinos, outrun rexes, or outfight lower level ones, and outrun gigas. Very useful.
One time a level 46 spino was attacking but I had four spike walls. I got him to(play ring around the rosey)walk right into them. They did so much damage all I had to do was fire one shot from my crossbow with normal arrows. So if you have a spino problem… just do what I did! Hope this helps!
Spinos are much more interested in you if u were near a lake or beach... they are territorial creatures however to escape feom that villian just run toward jungle or woods just run away as fast as possible from beach or lake they will lose interest on you in the end... well if u survived....goodluck