[1] Univ Exeter, Coll Life & Environm Sci, Dept Geog, Exeter EX4 4RJ, England
[2] Univ Bristol, Bristol Vet Sch, Bristol BS40 5DU, England
[3] Univ Edinburgh, Royal Dick Sch Vet Studies, Edinburgh, Scotland
[4] Univ Edinburgh, Innogen Inst & Sci, Sch Social & Polit Sci, Technol & Innovat Studies STIS, Edinburgh, Scotland