There are actually more than 1. The first one is a ice one it is near the wind and the void one.The second one is a another ice one below the fire monster closest to the farm,
Farm. Best quest for farming gold is the 'You Need More Iron In Your Diet' quest found from Ash in Falconreach (it's under Challenge). Coincidentally it's also the best place to level grind.
The Pig farm is in a quest in which you get it from Camilla in henesys.
@ the boss
you go to the farm
Green guard forest
Join farm
Cesar Chavez
usually you would be able to go to the farm and you would get it there but now only gaurdians can get to the farm
Head west past the gate.
use the map and go to greengaurd forest
Animal Farm portrays the Russian Revolution with each pig as a leader from the revolution.
Click on the map, then click on Battleon .It should be on the top right.