Machete Savane
Spilotes pullatus
A large, strikingly patterned black-and-yellow colubrid found from Mexico to Argentina, known locally as the Machete Savane and famed for its speed and bold temperament.
- Venomous?
- Non-venomous
- Adult length
- 1.8-2.5 m (6-8 ft)
- Range
- Mexico to northern Argentina
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Overview
The Machete Savane, more widely known as the tiger ratsnake or yellow ratsnake (Spilotes pullatus), is one of the largest and most conspicuous colubrids in the Americas. It ranges across a vast area from Mexico to northern Argentina.
This fast, alert snake is non-venomous but has a reputation for bold defensive behavior, including loud hissing and repeated striking when cornered, despite posing no serious threat to humans.
How to identify it
- Bold black and yellow crossbands or checkerboard pattern along the body
- Large size with a long, whip-like tail
- Head distinct from neck, large eyes with round pupils
- Keeled dorsal scales giving a slightly rough texture
- Juveniles show more contrasting, crisp banding than some adults
Habitat & range
Highly adaptable, found in lowland and premontane forests, forest edges, plantations, and near human settlements from Mexico through Central America and much of South America, from sea level to over 1,500 m elevation.
Behavior, diet & reproduction
Diurnal and highly active, moving quickly on the ground and climbing readily into trees. Preys on birds, eggs, rodents, bats, and other small vertebrates, killing prey by constriction. Known for bold defensive displays including neck flattening, loud hissing, and repeated strikes. Egg-laying.
Frequently asked questions
What is the Machete Savane also called?
It is more widely known as the tiger ratsnake or yellow ratsnake, Spilotes pullatus.
Is it venomous?
No, it is non-venomous and kills prey by constriction.
How large can it grow?
It can reach up to about 2.5 m (8 ft), making it one of the larger Neotropical colubrids.
Where does it live?
A wide range from Mexico through Central America to northern Argentina, in forests and open habitats.
Machete Savane guides
In-depth guides for identifying and understanding Machete Savane.
