1) South and slightly West of Blackwater.
2) North and very slightly East of Hamlin's Passing (in Cholla Springs)
3) South of Rathskeller Fork, North of and around the triangular shaped patch of land between a 3-way trail intersection.
4) South of Benedict Point, West of Plainview. Try imagining a line going West out of Plainview, and another line goin strait South out of Benedict Point. Where the two lines would cross is a general area to find them.
10) Tanner's Reach Cabin area.
You may want to purchase some Bait to lure them out. Remember, they are one of the few animals in the game that do attack you. BE CAREFUL.