Answer :
Final answer:
Tigers may exhibit abnormal behaviors like 'stalking the length of his cage' in captivity due to stress and limitations on natural behaviors.
Explanation:
The reason for the tiger 'stalking the length of his cage' in captivity may be due to behavioral changes induced by the stress of captivity, which can lead to abnormal behaviors. Captive animals, including tigers, experience limitations in expressing natural behaviors like hunting, roaming large distances, and engaging in typical social interactions. This can result in restlessness, boredom, and abnormal behaviors like pacing back and forth, commonly observed in zoos.
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