My Zombear and Hellephant don't chase me in Survival Shooter?

I have gotten up to video nine using Unity 5.4 and I have the updated assets downloaded. I got my Zombunny moving but for some reason I can’t get the hellephant and the zombear to move. They both spawn but they don’t move only there animation happens. I can’t kill them only just move them around. I could really use some help since this is for a school project. I also tried making a zombunny into my scene and changed the mesh so it looks like a zombear and it attacks and the animation is right, but when i shoot it and it dies, that animation doesn’t happen, it sort of just sink while standing up. Please help me thanks

This might help.