A Keighley charity is helping to fight a disease, originally spread by domestic dogs, that makes endangered tigers and other big cats lose their fear of humans.

Canine distemper virus (CDV) is a pathogen that threatens some of the rarest feline species across the world, and Wildlife Vets International, based on Parkwood Street, has joined efforts to stop it from decimating the tiger population.

Big cat specialist and co- founder of the charity Dr John Lewis will visit Sumatra to offer advice and help launch a programme to shed new light on the causes.