灰狼生命大约为10到18年，他的敌人只有人类！狼在美国是濒临绝种的动物。
The Gray Wolf's life span is from 10 to 18 years. Its only enemy is man. Wolves are an endangered species throughout the United States.
灰狼生命大约为10到18年，他的敌人只有人类！狼在美国是濒临绝种的动物。
The Gray Wolf's life span is from 10 to 18 years. Its only enemy is man. Wolves are an endangered species throughout the United States.
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