Mob not attacking with damage

So I am using Blockbench to try to make a texture for a mob I am adding to my mod, I need the texture mapping to pop up in mobs but it only shows up in items. What is a way to fix this?

Never mind but I still need help: My Model is a Java file now that is why it wasn't working before. But now I keep getting the invalid Java name error. I used Blockbench to change the model identifier and it didn't help. When I went into the code and changed the model name it didn't work there either. Please Help!

The last thing I have fixed but now it won't do damage to me or any mob I want it to. also it won't spawn in the wild. Any Help?