The main take-home messages are:
- Zoos have been in exists for a long time.
- Over their existence, there is an increasing awareness to promote animals welfare for wild animals in captivity.
- Zoo animal welfare is hard to study because there are many species of animals which are all biologically different.
- Cortisol and stereotypic behavior can be used to assess animal welfare.
- Methods to improve animals are education, regulation and creating accreditation programs.