Two professional engineers illustrate the proper care and practical benefits of cats. None of the cats, humans, or engineers were mistreated in the making of this film. They were however, slightly annoyed. T-shirts and oth>
David Attenborough presents the amazing lyre bird, which mimics the calls of other birds - and chainsaws and camera shutters - in this video clip from The Life of Birds. This clever creature is one of the most impressive a>
