Natural fur for fly tying question.

[KoldFusion]

My cousin bagged a bear the other day/week/year, and this weekend he is bagging a deer.

I asked him to grab me some fur from the animals for fly tying. Is there a specific spot he needs to harvest from on these animals for decent fur?

I figure at $4 for a little patch of fur --*snicker* reminds me of a joke-- is a little crazy if I can source my own.

Does any prep work need to be done to the fur before it can be used?
Any specific types of dye specifically for this?

Thanks in advance. You guys are the best!