Christophe Courteau / Peringuey's adder (Bitis peringueyi) buried in sand, flicking tongue, hunting, Namib Desert, Namibia.

Nick Garbutt / Green-and-Black Poison Dart Frog (Dendrobates auratus) inside bromiliad where it breeds. Boca Tapada, Caribbean slope, Costa Rica, Central America.

Lucas Bustamante / Anthony's poison-frog (Epipedobates anthonyi) seen through hole in leaf. Buenaventura Reserve, El Oro, Ecuador.

MYN / JP Lawrence / Strawberry poison frog (Oophaga pumilio) Escudo de Veraguas, Panama. Meetyourneighbours.net project

MYN / JP Lawrence / Lovely poison frog (Phyllobates lugubris) male with a tadpole, Isla Colon, Panama, June. Meetyourneighbours.net project

MYN / JP Lawrence / Dyeing poison frog (Dendrobates tinctorius) captive, occurs in Guiana, Suriname, Brazil, and French Guiana. Meetyourneighbours.net project

MYN / JP Lawrence / Dyeing poison frog (Dendrobates tinctorius) captive, occurs in Guiana, Suriname, Brazil, and French Guiana. Meetyourneighbours.net project

MYN / JP Lawrence / Blue poison dart frog (Dendrobates tinctorius azureus) portrait, captive. Meetyourneighbours.net project

Robert Thompson / Fly agaric (Amanita muscaria) Peatlands Park, County Armagh, Northern Ireland, October.

Juergen Freund / Paralytic tick (Ixodes holocyclus) with engorged body on human hand, this species affects many species, Spectacled flying fox (Pteropus conspicillatus) among them and infects them with a toxin that ca...

Pete Oxford / Phantasmal Poison Dart Frog (Epipedobates tricolor), native to South America

Pete Oxford / Anthony's Poison Arrow Frog (Epipedobates anthonyi) male carrying tadpoles, native to South America