Hognose Snake

Hognose snake is a common name for several snake species, especially members of the genus *Heterodon*, a group of North American colubrid snakes known for their upturned snouts and defensive displays.

Hognose snake is a common name for several snake species, especially members of the genus *Heterodon*, a group of North American colubrid snakes known for their upturned snouts and defensive displays. They are generally harmless to humans and are best known for burrowing, feeding on amphibians, and sometimes playing dead when threatened. Hognose snakes are relevant to Canadian readers because parts of southern Canada fall within the range of some species, especially the western hognose snake and the eastern hognose snake.

Taxonomy

In North America, the term hognose snake usually refers to species in the genus *Heterodon* within the family Colubridae. Some sources use the broader common name for unrelated hognose-like snakes in other genera, including *Leioheterodon* and *Lystrophis*.

Physical characteristics

Hognose snakes are named for the upturned scale at the tip of the snout, which resembles a pig's nose and is used for burrowing in loose soil. They are typically stout-bodied and show variable colouring and patterning depending on species and locality.

Behaviour and defence

Hognose snakes are known for striking defensive performances, including hissing, flattening the neck, false striking, and rolling over to feign death (thanatosis). This behaviour helps deter predators and has made them popular in wildlife education.

Diet and habitat

Hognose snakes often live in sandy or loose-soil habitats such as prairies, grasslands, meadows, and open woodlands where burrowing is easier. Their diet is dominated by amphibians, especially toads, though some species also eat lizards, rodents, birds, other snakes, and eggs.