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'''Ambulls''' are subterranean alien [[xenos]] creatures native to the [[Desert World|desert ]] [[Death World|death world]] of [[Luther McIntyre IX]].¹

They == Biology and Behavior ==Ambulls can easily survive extremely hot temperatures, which has led to attempts at domestication on several hot desert planets. As a consequence, Ambulls can be found on desert planets throughout the Imperium.¹

The Ambull's limbs end in iron -hard claws used for digging through the soft stone of their homeworld. Ambulls will excavate tunnels in which to live, spending most of their time underground. These burrows can often form extensive underground complexes.¹ Their tunnelling abilities have also defied attempts on many Imperial worlds to domesticate or corral them^42a.

Ambulls were sighted on the [[Ice World]] [[Simia Orichalcae]] while the [[Valhallan 597th]] were protecting a valuable [[promethium]] refinery. It was later speculated that they had arrived through a warp portal opened from some unknown desert world by a [[Necron]] scouting force that deployed to Simia Orichalcae. These rogue ambulls killed several promethium miners in the lower tunnels, while [[Commissar]] [[Ciaphas Cain]] and a Valhallan scouting party slew a great number of the beasts in the tunnels. It was noted that they could tunnel through ice as easily as sand or rock, and were remarkably survivable away from their normal desert environment^42b.

After the Simia Orichalcae campaign, Cain dined with [[Inquisitor]] [[Amberley Vail]] at an upscale restaurant, which offered ambull steak on its menu^42c.

*¹[[Warhammer 40,000: Rogue Trader]] p.207*²''[[Caves of Ice (Novel)]]'' by [[Sandy Mitchell]]:**a: Chapter 6**b: Chapters 5, 6**c: Chapter 16