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GOLDEN GATE ESTATES (CBSMiami/AP) — A nine-month-old endangered Florida panther appears to have been killed by another panther in Hendry County.

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The Florida Fish and Wildlife Conservation Commission said the panther’s remains were collected Monday on private land. Experts say the suspected cause of death was intraspecific aggression.

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It’s the third death reported this year.

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Florida panthers once roamed the entire Southeast, but now their habitat mostly is confined to a small region of Florida along the Gulf of Mexico. There are currently only 100-160 Florida panthers left in the wild.