their skin, making them toxic to predators, with their bright colors serving as a warning sign that ingestion could be dangerous and induce sickness. The intensity of this alkaloid concentration can flux both temporally and geographically, but careless human handling is always discouraged. Human activity may influence the level of Mantella toxicity by polluting the environment, killing its sources of food and limiting an otherwise diversified diet, so remote populations may be more potent. References External links 'Mantella baroni'' at AmphibiaWeb baroni Endemic frogs of Madagascar Amphibians described in 1888 Taxa named by George Albert Boulenger Taxonomy articles created by Polbot