Partly. Legal in few places, unsafe everywhere
Mostly no: keeping a bear is banned or needs special permits in most places, and a few US states and countries allow it with a licence or no rules. Raising a bear from a cub does not make it tame, and adult bears are strong, unpredictable and hard to house.
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The answer depends on where you live. Some jurisdictions allow bear ownership with permits, enclosure standards and insurance, and a few have had minimal rules. Most ban it or restrict it to zoos, sanctuaries and licensed exhibitors. Even where it is legal, hand-rearing does not domesticate a bear. Domestication takes many generations of selective breeding. Adult bears can be dangerous to owners and neighbours, they are costly to keep, and they live a long time. Bears taken from the wild as cubs are also commonly illegal to possess under wildlife law. Check your local wildlife agency before considering it. I did not search for current laws, so confirm them locally.
- Many US states ban private ownership of bears outright, others require permits, and a small number have had few or no restrictions. Laws change, so check current state and local rules.
- Many other countries ban it or require exotic-animal licences; the UK, for example, requires a Dangerous Wild Animals licence.
- Bears are not domesticated. Hand-raised bears can still become aggressive as they mature.
- Adult black bears can weigh over 100 kg and brown bears several hundred kg, and they need very large, strong enclosures and specialised diets.
- Bears can live 20-30 years, and sanctuaries often take in bears abandoned or confiscated from owners.