The platypus.
Platypus is a kind of primitive mammal, fat and flat, very cute, but it is a very scary killer, with super power. First of all, it has specific strong electric field sensing ability, which can sense the electric field generated by the muscle movement of prey nearby, so as to accurately determine the location of prey. Second, the platypus has highly toxic venom in its knees. When it gets close to its prey, it will quickly jab the prey and release the venom, which can cause nerve damage, muscle contraction, blood coagulation and even death of the prey.