These enemies are light purple in color with yellowish-white tips on their tails. They wear an open green vest with a white shirt underneath, reddish-purple pants, black boots, light green gloves and a white bandage in their tails. They carry a whip to attack.
In the job "Dark Caves" after Sly sets off the trap in the second cave, the dingoes that appear can attack faster than usual, likely because at this point Sly would be sprinting past them, so they would be unable to attack him at normal speed.
In concept art, these guards are shown carrying a gun.