Critters

Critters are neutral, mainly harmless creatures found on various worlds in the StarCraft universe.

Bengalaas
The Bengalaas is a felinoid life-form native to jungle planets such as Aiur. Its name is a variation on the Bengal Tiger, but it is actually closer to a panther in appearance and habitat preference. Bengalaases can be solitary or can hunt as part of a pack.

Interestingly, if one of these neutral creatures is slain in-game, it disappears in a psi-flash as dying Protoss warriors do.

Kakaru
The Kakaru is an avian life-form native to twilight worlds such as Shakuras. It is the only neutral creature that can fly. The kakaru's ability to survive on a nearly lifeless world remains a mystery.

Interestingly, if one of these neutral creatures is slain in-game, it disappears in a psi-flash as dying Protoss warriors do.

Ragnasaur
The Ragnasaur is a life-form native to volcanic planets such as Char. A tripedal creature, it has a thick, rocky hide and large, yellow-orange eyes.

Rhynadon
The Rhynadon is a rhinoceros-like life form native to near-desert or wasteland planets such as Mar Sara. Covered in a thick, armoured hide, it also possesses a large horn.

Scantid
The Scantid is a scorpion-like creature native to Korhal IV.

The original strain of the Scantid grew to a length no greater than 15 centimeters and was a common inhabitant of the desert regions of Korhal IV. It repelled predators with a mild venom which caused a mild rash and itching.

After Korhal was ravaged by nuclear weapons in the surprise attack by the Confederates, nothing was left alive on the surface of the planet, but Scantids survived in underground communal burrows. The massive radiation forever changed the species.

The mutated Scantid is much larger; its claws are capable of ripping a man in half and its stinger is filled with extremely lethal poison. However, scantids are not innately aggressive and generally flee when threatened or injured. Their communal instinct has survived; a large community of them live in an area known as "Scorpion Ravine".

Ursadon
The Ursadon is a white bear-like creature native to the world of Braxis.

Description
The Ursadon thrives in the snowy frozen wastelands, and possess no natural enemies. These carnivorous animals hunt in the icy water for food. Instances of attacks on humans are rare, but the few recorded instances of an enraged Ursadon attack have always ended in tragedy. The Koprulu Wilderness Society recommands keeping a safe distance from Ursadons both for your own safety and that of the Ursadon.

Ursadons have also been found on other ice worlds, including a dark moon that Zeratul encountered on one of his journeys, so it is confirmed that they have been found even outside of their presumed homeworld of Braxis. If Zeratul's warband kills all three Ursadons present near the strange power sources, a Broodling emerges from one of their stomachs. This Broodling doesn't suffer the extremely short lifestyle of other Broodlings, and may be the result of an experiment.

Braxis was "purified" by the Protoss under Artanis during a secret mission, rendering the Ursadon mostly extinct.