[3] The specific name, cookii, is in honor of English artist and naturalist Edward William Cooke.

[4] C. cookii is similar to C. hortulana and C. grenadensis, only smaller, with adults reaching a total length (including tail) of 5 feet (152 cm), and being mainly gray or brown in color.

"Corallus cooki is most easily distinguished from other members of the C. hortulanus complex by its color pattern.

It lacks the color variation (pale yellow, orange, red, many shades of brown) found in C. hortulanus and C. grenadensis.

Likewise, the main element of the dorsal pattern is relatively constant, and it rarely occurs in populations outside of St. Vincent.