Aggressive tigers may be mentally wired to fare better than their cautious counterparts.
To thrive in some of the harshest environments on Earth, Siberian tigers rely on thick coats of fur, fine-tuned night vision, and razor-sharp claws. But another critical survival tool is not so easily glimpsed: their personalities.
The Siberian, or Amur, tiger , is the largest tiger subspecies. It can weigh more than 200 kilograms. In the frigid forests of the Russian Far East and northeastern China, these burly cats stalk a variety of prey including birds, boars, and bears. In total, the caretakers completed more than 800 questionnaires, offering the researchers multiple personality surveys on each tiger. A battery of statistical analyses revealed whether particular adjectives clustered around certain tigers.
These personality types seem to make a difference. Based on their weights and eating habits, the tigers with majesty mindsets were generally healthier than those with steadiness personalities. They also hunted more, mated more often, and had more breeding success. Tigers that scored higher on majesty traits also appeared to have a higher social status than tigers that scored higher in steadiness traits, according to their caretakers.
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