BUNDIMUN

Bundimuns are found worldwide. Skilled at creeping under floorboards and behind skirting boards, they infest houses. The presence of a Bundimun is usually announced by a foul stench of decay. The Bundimun oozes a secretion which rots away the very foundations of the dwelling in which it's found. The Bundimum at rest resembles a path of greenish fungus with eyes, though when alarmed it will scuttle away on its numerous spindly legs"

-JK Rowling