Two African slender-snouted crocodiles arrived at Zoo Atlanta Tuesday and were put on display Friday.

The male crocodiles, who were loaned indefinitely from the St. Augustine Alligator Farm Zoological Park, may be seen at the "Scaly Slimy Spectacular" exhibit. The new arrivals were born in 2010 and are still growing; full adult lengths average around nine feet and may reach up to 13 feet.

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The critically endangered species is found in western tropical Africa, from Lake Tanganyika and Lake Mweru west to the Gambia River. Their most serious threats are hunting for skins and game meat, conflict with humans in fishing areas and an altered habitat alteration due to agriculture development, a press release said.

The new crocodile habitat was inhabited by four American alligators when “Scaly Slimy Spectacular” opened in 2015. Those animals, also on loan from the St. Augustine Alligator Farm Zoological Park, returned to Florida in November 2017.

There is no planned return

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Zoo Atlanta has released the results of a necropsy of Emerson, their rare tiger. The 10-year-old Sumatran tiger died of cancer of the bile duct, doctors said. The tiger had been showing signs of lethargy and a declining appetite. Emerson's death was a blow to Atlanta's animal community.