Claudio Contreras / Grey fox (Urocyon cinereoargenteus) licking nose, captive, Mexico City

Nick Garbutt / Darwin's hawkmoth (Xanthopan morgani praedicta) showing extraordinarily long coiled tongue. Andasibe-Mantadia National Park, Madagascar.

Anup Shah / Long-tailed macaque (Macaca fascicularis) juvenile sticking tongue out. Khao Sam Roi Yot National Park, Thailand.

Ole Jorgen Liodden / Common sandpiper (Actitis hypoleucos) singing with tongue visible, Norway, June.

Mark Taylor / Red toy poodle looking up at camera an sticking out tongue.

Ramon Navarro / Male Spanish ibex (Capra pyrenaica) displaying to female on mountain side, Torcal de Antequera Nature Reserve, Malaga, Spain, October.

Roland Seitre / Black-footed Ferret (Mustela nigripes) in burrow, North America

Roland Seitre / Arctic Wolf (Canis lupus) licking chops, Omega Park, Montebello, Quebec, Canada

Franco Banfi / Green anaconda (Eunectes murinus) underwater, flicking tongue, Formoso River, Bonito, Mato Grosso do Sul, Brazil

Angelo Gandolfi / Toco Toucan (Ramphastos toco) beak open with tongue visible while feeding on mango, Brazil

Chris Mattison / Green tree monitor (Varanus prasinus) with tongue out, captive from SE Asia.

Tim Fitzharris / Gray Wolf (Canis lupus) pack walking in snow, Montana