Out of these? A para and ride it, or perhaps Spinosaurus to see it’s true form

Pachy for Home defense

Spinosaurus only cause it's my favorite.

I love para, also imagine rocking up to school on your 15 ton parasaurolophus cyrtocristatus

I would ride my Allosaurus to school

If it was completely loyal, then probably either Para or Allo.

If it was a rowdy and mostly wild pet, Oviraptor is the safest bet

Probably a Parasaurolophus, I prefer Pachycephalosaurus more but I find Para less aggressive and more calm so I choose Parasaurolophus.

Either allo or pachy

I would choose eggy boi, I already own chickens so It would be far less different and would be less likely to be killed than if I owned allosaurus or spinosaurus