Stunning images released for the first time show the small scaled creatures – barely the size of a human palm – in their first few months.
The three clutches of eggs were hatched at a breeding ground in Phnom Penh, Cambodia, which is run by FFI and the Cambodian Forestry Administration.
The wild population of Siamese crocodiles is estimated at an alarming 250 mature individuals, which inhabit the remote mountains of the south-east Asian country.
They are classed as critically endangered on the International Union for Conservation of Nature ‘Red List’.
The species was actually believed to be extinct in the wild until it was rediscovered during a survey led by FFI.
Around 99 per cent of their natural habitat has disappeared, mainly due rice farming and other agricultural activity.
But the near-extinction of the reptiles has been caused by an explosion in hunting for their skins.
Dr Jackson Frachette, who manages the breeding programme, said: “This is the culmination of 18 years of hard work by FFI and our partners to protect and restore Siamese crocodiles in this part of Cambodia.
“We’ve really built on that solid foundation and it feels as though we’ve turned a corner in our efforts to bring this species back from the brink.”
All 65 of the baby crocs will be reared in captivity for up to three years until they grow to one metre in length.
They will then be big enough to fend for themselves and be released into protected areas.
FFI is aiming to double to wild population of Siamese crocodiles by 2020.
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