to tame it you must FLYYYYYYYYY

Just joking

Easy way:

1)tame Megalosaurus ( he is invisible to cave creatures)

2)get shooting balm and spoiled meat

3)find one and tame it while riding Megalosaurus (if you dismount it will agro on you)

Normal way:

1)craft ghillie armour (idk name of that armour)

2)get shooting balm and broth(I don't remember name)

3)find one and tame one