You can use purloivas as base defense and hiding your good loot. They can dig underground and when on aggressive it can jump out and knock a enemy player off tame dazing them or something. If u put them on passive and give them good loot u can have them go underground to protect ur stuff.
Guys l, this is important! The best way to defend your base on a PVP world is to cover the nearby area on a bunch of these guys set to aggressive and dig! Trust me when I say now one can break a formation like that, trust me I know😟
P.S. if it feels like cheating just remember that lvl 2 Rex that killed your raptor lvl 85 three days back because it was on passive😔