Eurogamer has put out an interesting YouTube piece regarding the artist behind the C215 artwork seen in FC4......great additions to the overall look of this well-done virtual world.
Here are the locations of the examples that I have found:
Sabal: 872/770.....Bhadra: 213/429.....Amita: 272/473.....Mohan: 292/457.....Paul: 342/275.....Yogi: 522/577.....Reggie: 520/577.....Noore: Inside Shanath Arena, on wall in battle zone.....Pagan Min: 510/813 & 689/837.....Yuma: 565/601.....Clouded Leopard: 868/729.....Eagle: 567/636.....Yak: 801/637.....Rhino: 507/435.....Tiger: 203/601.....Elephant: 504/647 (on the north pier of the bridge to NorthKyrat, below the roadway).
There may be other examples, as well.