Bloatfly

A bloatfly is a common mutated pest resembling an over-sized blow-fly, often found in the Capital Wasteland and the Mojave Wasteland. A common encounter in the Wasteland, the comparatively diminutive Bloatfly is quite aggressive, often attacking animals much larger than itself with reckless abandon.

Appearances
Bloatflies appear in Fallout 3 and Fallout: New Vegas.