Venezuelan biologist Carlos Alvarado, 34, has one hand on the young crocodile's neck and another on its tail. With the help of some tape and calipers, he is measuring it, tracking its growth a few days before it will be released into the wild.
Alvarado's story - and that of the Orinoco crocodile he is caring for - is a tale of hope and persistence in the face of overwhelming odds.
