Great Gaaahr

The Great Gaaahr is a desert-dwelling herbivore, and considerably the largest terrestrial creature found on its native planet.

Anatomy
The Great Gaaahr is so enormous it dwarfs all other known animals around it, taller than most trees. The structure of the body resembles that of an Earth sauropod or giraffe-like animal, with an orb-like structure growing out of its own back. Upon first glance, it appears to be a small-headed creature with a long thick neck, but this is in fact a proboscis of the creature. Its true eyes are located near the connection between the neck and the body, with its mouth capable of peeling upwards in a curling motion to feed.

Its method of feeding is sometimes mistaken for a sudden standstorm, as it is a filter-feeder: sucking in large amounts of plant matter by inhaling through its large mouth. Numerous other objects are also swallowed, though these aren't digested. Its body is held upright by a gas-filled sac. This sac, which is filled with an atmosphere that is poisonous to Trebhum, is inhabited by a number of plant-like organisms that have a symbiotic relationship with the Gaaarh.

The Great Gaaahr drops pink bombs from its gas sac, annihilating things that are hit by them. It is unknown what these bombs really are, whether they are a defence mechanism, an organism from the gas sac, or parasites in the gas sac.

Behavior
Not much is known of its behavior, though judging by its large size, it's often considered as a peaceful herbivore as adults don't have any natural predators.