| 1 | The scientists referred the tiger to the cat family. | |
| 2 | The tiger is a representative of the cat family. | |
| 3 | Big cats are killed in this way. | |
| 4 | Not since the time of the sabertooth has a feline species gone extinct. | |
| 5 | Apparently so that the big cats' feet can handle the stress of the greater body weight. |
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