Basilisk

Fortunately, unlike the gossips in town will tell you, a basilisk cannot freeze you into stone with a simple gaze, else we'd have statues of hunters littered around all the forests. Unfortunately, their sheer size, ferocity, and the acid-like venom produced within their jaws provides them with plenty of other ways to kill their prey.

Massive lizard-like beings nearly the size of lions with razor sharp talons on each of their claws and tipping their tail, a mouth lined with terrifying fangs, and the ability to spit their corrosive venom up to thirty feet away with horrific accuracy, the basilisk poses perhaps the most risk of all reptilians to explorers and hunters, as these creatures have no qualms or holds against attacking, hunting, and killing humanoids.
Sometimes referred to as "chicken lizards" due to the spined flap and bony crest present on a male basilisk's head and neck which somewhat resemble the comb and wattles of a rooster, basilisks primarily live and hunt in packs. This, combined with their unusual ferocity, leaves most trackers making sure to avoid any possible signs of a basilisk den. Luckily for most, these beasts tend to make their homes in places where civilization is not often found.
Female basilisks are, luckily, much more docile when encountered, as they will simply raise their dorsal fin and hiss, possibly spitting if the threat gets too close, though they will likely run towards their homes in the hopes of finding a male to defend them, as female basilisks are usually carrying eggs. Males, however, seem to enjoy hunting, and it isn't unusual to see a pack of basilisk males feasting on a slain tiger. In large enough numbers, they may also be capable of bringing down drakes, chimeras, and julunggalis - or anything else not quick enough to outrun them.