Extinction of the wolf as a colour-monomorphic species

Extinction of the wolf as a colour-monomorphic species

Canis lupus photo © Doug Smith Extinction of the wolf as a colour-monomorphic species The original wolf no longer exists worldwide because of hybridisation with the domestic dog, a species derived mainly from a different, colour-polymorphic canid species. The wolf is...
Addiction to the most natural of fuels

Addiction to the most natural of fuels

Ball-and-stick model of a glucose molecule, image available in the public domain                                  Addiction to the most natural of fuels In the human species, sugar is a natural part of the diet yet seems to be addictive. The resolution to this paradox...
Chimaera-mimicry in juvenile cheetah

Chimaera-mimicry in juvenile cheetah

Acinonyx jubatus juveniles with mother photo © Mathias Appel  Chimaera-mimicry in juvenile cheetah Mellivora capensis photo © Jaganath The juvenile colouration of the cheetah exemplifies chimaera-mimicry. The body imitates that of the honey badger while the head...
Radiation of Australasian treefrogs (genus Litoria)

Radiation of Australasian treefrogs (genus Litoria)

Litoria phyllochroa photo © Froggydarb Radiation of Australasian treefrogs (genus Litoria) Litoria raniformis photo © Tnarg 12345 Australasian marsupials have radiated into surprisingly diverse forms despite all retaining a single mode of reproduction by means of...
Working versus idle weaponry in the wild

Working versus idle weaponry in the wild

Acinonyx jubatus photo © Rob Kirby Working versus idle weaponry in the wild Alcelaphus cokii photo © Dger The distinction between working and idle weaponry is illustrated by this cheetah attacking a female hartebeest. The cheetah possesses remarkably small weapons,...