When male frogs call out or trill to other frogs during mating season, they are mostly calling out to females in hopes of mating. The male orange-eyed treefrog (Litoria chloris) however trills to other males, according to a new study by Griffith University of Australia that helped to determine what the frogs transmitted as they called out to other frogs. Leer más.

This morning the Nobel Assembly announced that the 2012 Nobel Prize in Physiology or Medicine will be shared by John B. Gurdon and Shinya Yamanaka for their “discovery that mature cells can be reprogrammed to become pluripotent”.  Animal research played a key role in the research honoured by the prize, specifically the studies of frogs undertaken by Professor Gurdon and studies of mice performed by Professor Yamanaka. Leer más.

Just because a lizard can grow back its tail, doesn’t mean it will be exactly the same. A multidisciplinary team of scientists from Arizona State University and the University of Arizona examined the anatomical and microscopic make-up of regenerated lizard tails and discovered that the new tails are quite different from the original ones. Leer más.

Microscopic analysis of what were thought to be thin rib-like bones that ran the length of sauropods necks show them to be ossified tendons. Christopher Intagliata reports. Leer más.

Hembra de camaleón común (Chamaeleo chamaeleon) excavando nido para hacer la puesta. Enix, Sierra de Gádor Almería (29/09/2012). Ir al enlace.