If you're interested in making money, I found that it's very easy to chain cerberus and other dog-like creatures in the (SPOILER)Feywood. Prime pelts are a very common drop and they sell for over 1,000 gil a pop. They also sometimes drop franciscas, which is an Axe. It has an attack power of like, 89 or something, and it sells for 5,000 a pop. That's a rare drop though.