LifeWhen Animals Dream review: Making the case for 'animalhood' In his new book, David Peña-Guzmán argues that animals that can dream have a sense of self, and therefore a far more complex kind of "animalhood" than we thought possible Culture
LifeLizard unfurls its face like a flower as a way to scare off predators The toad-headed agama can unfold colourful skin flaps at the corners of its mouth to produce a vibrant display, but a study suggests this behaviour hasn’t evolved to impress mates – it may actually help to startle predators News