[9] O. guibei is native to central sections of South America, in parts of Bolivia, Brazil, Paraguay, and Argentina.

[12] It will eat the lizard Tropidurus itambere and it has been observed taking white-tipped dove nestlings (Leptotila sp.).

[5] Eggs are laid in nest sites such as cavities in rock piles and abandoned rabbit burrows.

It has also been observed in the diet of the maned wolf (Chrysocyon brachyurus), which readily eats snakes, including venomous species.

[4] O. guibei performs defensive behaviors when threatened, such as "brusque" thrashing,[10] staying still or rushing to escape, compressing or inflating its body, coiling, hiding its head, or producing a cloacal discharge.