In some species, particularly rabbits and chickens, tonic immobility may be induced by fear, and care must be taken to not confuse this behavioral response with loss of consciousness.

• 在某些种类，特别是兔子和鸡，刺激性保定可能导致害怕，所以操作必须保证不导致这样的与失去知觉相关的行为反映。