if its a pet then look in petdescribe.ini of a client with it added
search for the name of the pet youre looking for and look at the number directly above it
[1071860]
Describe1=Type:~Saint~Bear\bMain~attribute:~none\b Sub~attribute:~Patk,~Pdef,~Matk,~Mdef,~HP\bSkill:~ none.~Can~be~mounted~after~10-star\bCan~be~converged.~Evolution:~2nd
the portion in red is the id for your pet in this case a saintbear once you have the id you can follow it back to all of its supporting files