The Oxus cobra contains what kind of ions for their venom to be active?
Caspian cobra The Caspian cobra ("Naja oxiana"), also called the Central Asian cobra, Oxus cobra or Russian cobra, a member of the family Elapidae found in Central Asia.
Southern black racer The southern black racer (Coluber constrictor priapus) is one of the more common subspecies of the non-venomous "Coluber constrictor" snake species of the Southeastern United States. The name "priapus" refers to the proximal spines of the hemipenes being much enlarged into basal hooks, which is characteristic of this subspecies. These snakes are quite active during the day, which increases the chance of sightings. They will eat almost any animal they can overpower, including, rodents, frogs, toads, and lizards. Members of this species generally do not tolerate handling – even after months in captivity – and will typically strike and flail wildly every time they are handled, often defecating a foul smelling musk, a common defense against predators in snakes. Adults of the species are usually thin with a jet black dorsal side with a grey belly and white chin. They are quite fast, giving rise to the name "racer".