Euglandina rosea

[2] The rosy wolfsnail was introduced into Hawaii in 1955 as a biological control for the invasive African land snail, Lissachatina fulica.

[3] The snail has a light grey or brown body, with its lower tentacles being long and almost touching the ground.

[4] This species is found naturally in the Southern United States, usually in hardwood forests and urban gardens.

[2] The rosy wolfsnail prefers to consume smaller snails because these are quicker and easier to eat.

[7] The rosy wolfsnail is specialized for carnivory, its buccal mass being totally contained within a beak-like rostrum that can be extended, thus allowing the toothed radula to be ejected past the mouth and into the snail's prey.

[3] The four main mammalian predators for the rosy wolfsnail are rats, tenrecs, pigs, and mongooses.

Following this mounting, a head-waving display ensues, where the pursuing snail vigorously shakes its head for 15 minutes.

This ultimately ends with a short period of inactivity, where the mounted snail turns its head to face its own shell.

[9] Following this, copulation occurs, with the one snail still mounted on the shell of the other, the two heads are brought together, and then twisted around each other's necks, enabling genital contact.

The rosy wolfsnail has become an invasive species in many areas outside its native range, including in Hawaii.

[10] These prey snails were at an increased risk of predation-caused extinction because of their extremely low reproduction rates.

[11] The rosy wolfsnail has caused the extinction of an estimated eight native snail species in Hawaii.

[4] Due to this, the International Union for Conservation of Nature (IUCN) has placed the rosy wolfsnail on the list of the top 100 worst invasive alien species in the world.

[13] The IUCN states that the introduction of the rosy wolfsnail to non-native habitats is now formally discouraged.

Euglandina rosea from NW Florida
A hand painted engraved drawing of E. rosea published in 1857
An O'ahu tree snail , one of the primary species threatened by introduced rosy wolfsnails.