Basilisk

Basilisk, sometimes called a regulus, is a poisonous reptillian monster. People often mix it up with cockatrice.

Appearance
Basilisk resembles a big lizard with muscular body and six limbs. Its scales vary between dark green and black, and sometimes even gray. While front limbs have four clawed digits (one pointing backwards, like in birds), middle and rear limbs have only three digits. Basilisk has a long, whiplike tail.

Basiliskos means "tiny crown" in Greek. Basilisk's neck is ornated with a small triceratops like crest and rows of thick black spines behind it, making the creature look like it's wearing a crown.

Its eyes are intensely yellow, and it has a small nose horn and several short spines on its lower jaw. Inside of the basilisk's mouth has a sickly green tone, with a snake-like tongue and light green fangs, which inject deadly venom produced in glands above the monster's palate.

Behavior
Basilisk lay in ambush for prey. They envenomate their victims with a single bite and back off. Basilisk's poison is one of the strongest known neurotoxins; one drop of it can kill an adult man in less than a minute.

Myths
Basilisk do not actually kill with their stare, nor they are afraid of weasels and rooster crowing.

Normal humans tell legends about basilisks that originated from few, now disregarded sightings in 14th century.

Trivia

 * Basilisk hate cockatrices.
 * They can swim.
 * These monsters have the magical ability of being immune to virtually every kind of poison.
 * Cockatrices and basilisks are one of the smallest monsters. Still, they are very deadly.