Field monsters can be tamed and made into companions by using Pet Feed items and ‘Taming’.
Go to a pet supply merchant npc to buy pet feeds. You must be level 45 first
The chances of taming is influenced by your character’s Charisma.
Use the pet feed then select the pet you want to tame. Use feed suited to a monster’s palate for a chance to tame them as a pet.
View monsters palate in the codex.
try check your inventory and use pet egg.