Slug Snakes are small, slender, forest-dwelling snakes, some of which are terrestrial and some of which frequent low vegetation. They tend to be found in moister areas with the slugs and snails that make up their diet.
Some species of Slug Snakes may be confused with young Cat Snakes.
spotted Slug Snakes
White and black spots form broken bands. Dorsal scales are slightly keeled. Collar is W-shaped, speckled, and rarely colored. Usually found at higher elevations.
White and black spots form broken bands. Dorsal scales are smooth. Collar is straight or broken up, unspeckled, and often colored. Usually found at lower elevations.
barred Slug Snakes
Tan to brown with darker bars. Keeled dorsal scales. Prefrontal scale does not contact eye. Found at lower elevations.
Tan to orangish-brown with darker bars. Keeled dorsal scales. Prefrontal scale contacts eye. Found at higher elevations in the N and W of Thailand.
Brown to reddish-brown with dark bars and sometimes a light dorsal stripe. Smooth dorsal scales. Found in the S of Thailand.
Thai populations are black with white heads, white dorsal stripe, and uneven white boxes on body. Slight keel along dorsal stripe. Found in the S of Thailand.
blunt-headed Slug Snakes
Can be a variety of clouded or barred patterns. Head is very short and deep with a vertical eyestripe passing through light lip. Body is extremely slender. Found in the S of Thailand.