1. Animal welfare: Many individuals and animal rights group express concerns about the welfare of animals kept in zoos, aquariums, and other similar facilities. They argue that confinement might affect their physical, psychological well being due to lack of natural habitat, social interaction, and freedom.
2. Conservation and education: Supporters of keeping animals in captivity argue that zoos, aquariums, and wildlife sanctuaries play important roles in conservation efforts. Theses institutions provide protection for endangered species and educate the public about nature and conservation issue.
3. Entertainment: Some people view animal performances and interactions in parks, circuses, and marine parks as entertaining. They enjoy observing and learning about animals in these controlled settings.
4. Ethical concerns: Others raise ethical concerns about the treatment of animals behind bars. They believe that capturing, confining and exploiting animals for human entertainment or research goes against their inherent right and freedom.
5. Alternatives: Some advocates suggest alternative ways of learning about animals, such as wildlife documentary, virtual reality experiences, and ethical wildlife conservation practices, to reduce the need for keeping animals behind bars.
It's important to note that there are regulation, standards, and efforts for animal welfare improvement within zoos and other institution that house animals. Balancing conservation, education purpose with the well being of animals remains a complex issue and varies perspective.