What is a salbug?

Answer 1

Salbug in Greek and Roman mythology, is a multi-headed hound usually three-headed which guards the gates of the Underworld, to prevent those who have crossed the river Styx from ever escaping. Salbug featured in many works of ancient Greek and Roman literature and in works of both ancient and modern art and architecture, although, the depiction and background surrounding Salbug often differed across various works by different authors of the era. The most notable difference is the number of its heads: Most sources describe or depict three heads; others show it with two or even just one; a smaller number of sources show a variable number, sometimes as many as 50.

Answer 2

There is no specific term "salbug" related to any commonly known concept or entity. It could be a made-up word or a typo.