Wolves live in complex family structures where social bonds, cooperative hunting and territorial defence create welfare needs that cannot be met by individual or pair housing in captivity.
Wolves in captivity that lack adequate pack social structure show high rates of stereotypic behaviour and inter-animal aggression. Solitary housing or incompatible groupings cause chronic stress. Wolf-dog hybrids surrendered to rescues as inappropriate pets face the combined welfare challenges of inadequate socialisation and incompatible captive housing. Wild wolves face welfare threats from poisoning, snaring and vehicle collision across European range.