Challenging perceptions of homosexuality in the animal world

Professor Volker Sommer (UCL Anthropology) says it is common for animals to have sex with members of their own and the opposite sex and that dismissing gay behaviour in animals as merely bonding or an expression of dominance is incorrect and shortsighted.

Listen: Channel 4 'My Gay Dog and Other Animals' (from 8 mins 30 secs), More: Sun, Guardian, iNews