In the second of four editions recorded at the Hay Festival, Caroline Ingraham explains why we should give animals choices. She is the founder of a new approach to animal welfare which gives domestic and captive animals the chance to "self-medicate" as, she says, research shows they would in the wild.

"Maybe it's time to re-evaluate our relationship with animals, and start perceiving them as active, rather than passive, beings."

Producer: Lucy Proctor.