Meh, ignore IDA...They are just a bunch of freaks.
1. If Rockstar have denied to put animals in the game, than these guys would say that it is discriminating the animals
2. Where is IDP?
3. Aren't games made, so you may kill in your warm house, while PLAYING A GAME, instead of killing real animals, in REAL LIFE?
If I was IDA member, I would say " Thanks Rockstar, now many hunters just sit infront of their computers, instead of killing real animals "