No, slugs do not have opposable thumbs. Slugs are mollusks and belong to the class Gastropoda. They have a soft, muscular body and move by contracting and expanding their foot, which is a large muscle located on the underside of their body. Unlike primates, such as humans and some other mammals, slugs do not have hands, fingers, or thumbs. Their anatomy is quite different, and they lack the skeletal structure necessary for opposable thumbs.
Opposable thumbs are a feature found in certain animals, primarily primates, that allow them to grasp and manipulate objects with precision. This adaptation is crucial for tasks such as tool use, climbing, and handling food. Slugs, on the other hand, rely on their radula, a tongue-like organ with tiny teeth, to scrape and consume food. Their movement and feeding mechanisms are adapted to their environment and lifestyle, which do not require the use of opposable thumbs.