The Honduran white bat (Ectophylla alba)..

It is found in Honduras, Nicaragua, Costa Rica and western Panama at elevations from sea level to 700 m (2,300 ft).[1] Due to habitat loss, it is evaluated as near-threatened by the IUCN. Its bright yellow ears, nose-leaf, and lips are a result of carotenoid deposition; the mechanism of this deposition is being researched as a way to understand and combat macular degeneration in humans.