Just before a duckling was about to hatch, a dog came along and chased the female duck off of the nest. When the duckling hatched it saw the dog. When the dog moved away from the nest, the duckling followed the dog. This is an example of

Question

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This is an example of imprinting, a form of learning in which a young animal follows and becomes attached to a moving object, usually one of its parents or in this case, the first moving object it sees, which was the dog.

Just Before a Duckling Was About to Hatch, a Dog