By Erlandson, Keith
By Berns, Gregory
By Dale, Hannah
By Fogle, Bruce
By Daniel Borris
By Shortman, Maurice
By Evans, Howard E., DeLahunta, Alexander
By Ariely, Dan
By Don, Monty
By Merritt, Raymond W., Barth, M
By Campbell, Clare, Christy
By Catherine Britton
By Gwen Bailey
By Browne, A.Gondrexon-Ives, Broecke, K.V.D., Ko Van Den
By Dr. Scott Miller
By Brave, Ulysses
By Susan M. Ewing
By Dawes, Richard
By Justine Hankins
By DeNicola DVM PhD DACVP, Dennis B., Cowell DVM MS MRCVS DACVP, Rick L., Tyler DVM PhD DACVP DABT, Ronald D., Meinkoth DVM PhD DACVP, James H.
By Hugo van Lawick, David Bygott
By Ruiz, Suzanne
By Royston, Angela
By Regan, Margaret, Drysdale, John
By Ross, Veronica
By Collier, Margaret
By Harris, Rolf
By American Kennel Club
By Rachelle Blondel