Biologists are in a slow and steady race to help North America’s largest and rarest Bolson tortoise species.
Bolson tortoises is the largest and rarest land reptile, as well as the rarest of the six Gopherus species native to the North American Continent.
Adult males are generally smaller than females in this species.
The tortoise is a land-dwelling reptile that spends more than 95% of its time in a burrow that it constructs with its shovel-like front feet.
All foraging, nesting and mating activities take place during the tortoise’s active season from roughly April to October.
The average life span of a Bolson tortoise is not known but probably lies upward of a century.
This species at present, is restricted to a relatively small area of the grasslands of north-central Mexico in the states of Chihuahua, Coahuila and Durango, where it exists in disjunct sub-populations. Conservation status: