Dappled Forest Grizzly Bear

I think it would be wonderful if we get some animals that just live in the dappled forest and maybe even other biomes. I think that the Grizzly Bear would make a great hostile mob as they can smell you from a far distance, and if you kill a grizzly bear, the other bears will chase you until it becomes night, and they will break anything that comes in their way, so it’s advised not to go to your house. If you don’t attack the bears, they won’t break blocks to reach you and will simply leave.