I'm fascinated by lizards. 
They are definitely interesting! There are over 6000 species of lizards.
I wonder if they're broken down into sub-species. 
I'm sure they are. Especially with all the different kinds of lizards. Some have 4 legs, some have none and have snake-like bodies.
I know a lot of them are green, or brown, but there are probably other colors as well.
For sure. They have a lot of different adaptations. Some even have camouflage.
Are any of them carnivores, do you think?
legless, and have long snake-like bodies. Some such as the forest-dwelling "Draco" lizards are able to glide. They are often territorial, the males fighting off other males and signalling, often with brightly colours, to attract mates and to intimidate rivals. Lizards are mainly carnivorous, often being sit-and-wait predators; many smaller species eat insects, while the Komodo eats mammals as big as water buffalo.
Lizards make use of a variety of antipredator adaptations, including venom, camouflage,
Skink
Skinks are lizards belonging to the family Scincidae and the infraorder Scincomorpha. With more than 1,500 described species, the Scincidae are one of the most diverse families of lizards. Common skinks include many different kinds such as the slender skink, snake-eyed skink and the skinks of Plestiodon are among the common skinks.
Description.
Skinks look like true lizards, but most species have no pronounced neck, and their legs are relatively small; several genera (e.g., "Typhlosaurus") have no limbs at all