new ball feeding

I offered my new ball a mouse by shakin it infront of his face cuz he seemed very energetic and hungry. He struck the mouse and constricted around it and killed the mouse but js left the mouse there. So now i have a dead mouse in the middle of my snakes tank and im wondering if i should leave it for a while or take it out. also is there a reason y he did this?

If the mouse is dead leave it overnight and toss it in the morning if no eaten.

As far as reasons not having much information regarding your new animal it can be anything.

Not settled in yet, stressed, being disturbed etc.

does hissing real loud wen i get into ts tank mean its stressed?? should i js leave him alone for a week to let him settle or wat?

cuz im not tryin to get bit haha and im thinkin i should js toss the dead mouse cuz it seems it has no interest in it at all