Two dogs, a cat and a monkey are combining their efforts to cajole a parrot out of its cage. Etching by J. E. Ridinger. https://www.rawpixel.com/image/13993441/image-dog-paper-catFree Image from public domain licenseModel voor een gezicht (1565) by anonymous, Hans Sebald Beham and erven Christian Egenolff https://www.rawpixel.com/image/13760764/image-paper-grid-cartoonFree Image from public domain licenseFitzgerald Brothers Circus & Menagerie (circa 1894) by Burton Brothers. https://www.rawpixel.com/image/13031208/fitzgerald-brothers-circus-menagerie-circa-1894-burton-brothersFree Image from public domain licenseThe Pasteur Institute, Kasauli, India: production of the rabies vaccine: caged rabbits, after inoculation. Photograph, ca.… https://www.rawpixel.com/image/13971103/photo-image-dog-cat-personFree Image from public domain licenseCloseup of kid hand holding stick feeding the lion https://www.rawpixel.com/image/84695/premium-photo-image-lion-activity-blondView licenseCloseup of kid hand holding stick feeding the lion https://www.rawpixel.com/image/84698/premium-photo-image-lions-cage-activityView licenseCloseup of monkey captived in the zoo https://www.rawpixel.com/image/84690/premium-photo-image-monkey-animal-captiveView license