Thessalhydra

Thessalhydras were one of the four known thessalmonsters, a species of crossbred hybrid creatures.

Description
Thessalhydras were hideous and terrifying creatures. It had a large, reptilian body with a long tail, in length, which ended in a pair of large, sharp pincers. It had no head, instead eight hydra-like heads surrounded a gaping mouth filled with teeth and acidic saliva.

Abilities
Thessalhydras had a natural immunity to all known acids and poisons with acidic effects. If one of its heads was severed, it grew back over a twelve day period. Once per day, it could spit a large amount of acid at a target, covering an area of with a range of up to.

Combat
A thessalhydra made for a formidable opponent in battle. Each of its eight heads attacked independently, each bite delivering a potent poison. It used the pincer on the end of it's tail to grab a target, lifting and dragging the unfortunate creature into its mouth.

Ecology
Thessalhydras were found in jungles, swamps and underground locations. They were voracious carnivores, and would not hesitate to kill and eat another thessalhydra.

Uses
Juvenile thessalhydras were sometimes used as guards. They were not trained, attacking anyone who approached them. Thessalhydra eggs were worth up to 7,500 gp and a live juvenile up to 12,000 gp.