Is a cat capable of killing a human?

Yes, not on purpose. Sometimes they are right behind you or on the stairs at night and they can cause a tripping hazard. They do not have the injury power of dogs. To date I have not found an occurance. read more

A human can kill a tiger barehanded if that tiger is bound or tranquilized or severely injured or a number other scenarios. But the real problem comes with the fact that those scenarios that would let you kill a big cat bare handed are rare and a fully awake, aware, and defensive big cat, would not take kindly to a human attempting to harm it. read more

Now about your question, I think a large female ball python could kill a cat or small dog in the correct circumstances but even that is HIGHLY unlikely. However, a ball python could not get nearly big enough to kill a human and on top of that they are usually referred to as the most docile snake because of their very tame nature. read more