Petting zoos provide public contact with farm and exotic animals, but welfare standards vary enormously with many animals experiencing chronic stress from high-contact visitor environments.
Petting zoo welfare exists on a spectrum from genuinely enriching for well-managed species in appropriate conditions to chronically stressful for animals in high-contact, poorly managed environments. The key welfare indicators are animal agency -- can the animal move away from contact? -- and visitor management that prevents rough handling. A rabbit that can choose to approach visitors and retreat when it wants is in a fundamentally different welfare situation from one that is held out to children who may grip or drop it. Welfare-positive petting zoos exist and can provide genuine educational value; the challenge is that welfare standards are inconsistently applied and rarely enforced.