The selfie- and snuggle-loving llama called Whitetop is 27 years and more than 250 days old — and loves his job.

Yet some species do better in urban areas than in rural ones.     Research is showing that animals of the same species that live in cities and the countryside are behaving differently. These ...

Cities can be deeply unwelcoming places for wildlife. They are noisy, difficult to get around, full of people and heavily ...