“Dark River” writer-director Clio Barnard discussed the difficulty of working with animals — specially sheep, owls, and rabbits — on her new film.

“I went and stayed with this great couple called Malcolm and Hazel up in Yorkshire, and they taught me loads of skills of what you need to do on a farm: dragging them around, shearing them, castrating lambs, clipping feet, dipping then,” star Ruth Wilson said. “I had to do all of it.”

The two stopped by the Variety Studio Presented by AT&T at the Toronto Film Festival.