Philodryas nattereri, the Paraguay green racer, is a species of venomous snake, endemic to South America.

It is characterized by a medium body, a long, slender tail, a slightly prominent and obliquely truncated snout, and moderately large eyes with round pupils.

It is a fast snake with terrestrial habits, although recent studies have shown that this species can use arboreal environments with high efficiency.

[3] Philodryas nattereri is endemic to South America, found in Paraguay and Brazil, where it inhabits open forests, fields and cerrado.

It can cause dermo necrosis, myonecrosis, and hemorrhagic activity, resulting in mast cell degranulation, muscle damage and inflammation.