An alligator named Muja, who lives in Belgrade Zoo, is considered to be the oldest alligator in captivity.
Having remained a popular visitor attraction at the Serbian zoo for more than eight decades, Muja was originally brought to the country from Germany as an adult just before World War II began.
Although there is no official record of his precise date of birth, the fact that he has remained at the zoo since 1937 means that he must be at least 81 years old and is quite possibly much older than that.
Aside from a bout of gangrene which resulted in him losing his front right claw in 2012, he is still regarded as relatively healthy and has a good appetite, especially for his age.
"He is well... and healthy, eats well and is in good form for his age, so we hope that he'll remain that way for many years," said zoo director Srboljub Aleksic.