Can I bite the mouse?
What mouse? Why do want to bite it?
There's a mouse in my home and I want to bite it and eat it.
It's wrong to want to eat a living animal since it will cause pain and suffering to the animal if you do so. If you want to eat an animal for its meat you should first kill the animal as painlessly as possible since you should not cause any unnecessary suffering.
What if the mouse wants me to eat it? How would you know that I am doing anything wrong by trying to kill the mouse?
I doubt the mouse wants you to eat it, what gives you that idea? Maybe you should speak with a therapist about your feelings on wanting to eat a mouse, I think there may be something more here you're not able to tell me.