Though quite variable in color, they normally have spots and can attain large sizes (up to 8 inches, though 3-4 inches is more common). Their scientific name literally translates to "biggest keeled slug." Though quite big, there are bigger slugs, even in the keeled slug family (called this due to their slightly roof-shaped last third of their backs). Among our local species though, none get to their size.
Leopard Slugs have a most unusual mating system. First of all, they are all hermaphrodites. Each slug has both male and female sexual organs, though they cannot mate with themselves. Rather they suspend themselves by a mucus rope they form, pair up, and mate while hanging in the air.
|Giant Leopard Slug with its eggs|
|One day old slugs next to their eggs and a dime for size comparison.|
|Leopard Slugs feeding on fungus|