How is the actual sound of the Dandie Dinmont Terrier's bark frequently described?

Answer

Amazingly deep and loud, often specified as 'baritone.'

When they do vocalize, their bark is described as remarkably deep and loud, often characterized as a 'baritone' sound, which makes them deceptively good guard dogs given their compact size.

How is the actual sound of the Dandie Dinmont Terrier's bark frequently described?
Dogbarkbreed