Researchers used mathematical modelling developed by Alan Turing to study why flocks of long-tailed tits segregate themselves into different parts of the landscape.
She entwined my whole arm in her trunk, held it there as she breathed deeply several times, and then put the tip of her trunk in her mouth and sighed. I came a little closer and let her explore my face and neck freely until I could hear a soft growl of pure delight: the elephant equivalent of purring.