Robert Thompson / Garden tiger moth (Arctia caja) Killard Point NNR, Ballyhornan, County Down, Northern Ireland.July.

Ingo Arndt / Saturniid moth caterpillar with warning colouration {Syssphinx mexicana} Guanacaste, Costa Rica

Ingo Arndt / Yellow bellied toad {Bombina variegata} Germany

Alex Hyde / Aposematism describes the use of bright colouration and bold patterns to advertise that an organism is unpalatable or dangerous. All three insects are foul-tasting or toxic if eaten: Wood Tiger moth...

Alex Hyde / Magpie Moth caterpillar (Abraxas grossulariata) showing warning colouration, photographed on a white background. Peak District National Park, Derbyshire, UK. June.

Rod Williams / Yellow-banded Poison Dart Frog (Dendrobates leucomelas) sitting on colourful variegated leaves. Captive, found in Brazil, Guyana, Venezuela

Fabio Liverani / Oriental fire bellied toad showing warning colours.

Fabio Liverani / Yellow bellied toad defensive display - shows brightly coloured belly, Italy

Fabio Liverani / Yellow bellied toad defensive display to snake, Italy - shows brighly coloured belly

Pete Oxford / Poison arrow frog {Dendrobates histrionicus} Western Ecuador

Pete Oxford / Poison Arrow Frog (Epipedobates tricolor) Ecuador Amazon South-America. colourful.

Hans Christoph Kappel / European (fire) salamander