Baby racoons will do this when they are happy and feel like they are protected and safe. I've had several litters of baby racoons and they would always purr when they were curled up in a warm spot, nursing or when we'd pet them.
Drawing meets life UK-based digital artist Dan Lester combines photography and illustration into clever and intriguing images that really make you question what you're looking at. Is it a photograph or a drawing? In actuality, it's both.