**Acknowledgements**

The work was funded by PetPlan, Waltham, The Ministry of Higher Education and Scientific Research of Iraq, Western Scholarship and The University of Nottingham School of veterinary Medicine and Science. We also thank Mr. Craig Sturrock CIPB, Hounsfield Building, University of Nottingham with whom the computed tomography imaging was carried out. Catrin Rutland Orcid: 0000- 0002-2009-4898. Cyril Rauch Orcid: 0000-0001-8584-420X.F. Emily Paul Orcid: 0000-0001-8518-4205.
