Practically, you can almost do a simple multiplication of the age of the donkey by 3 to get its equivalent in human age.
Even its growth, the colt stage to adulthood is almost proportional to what we know with humans, unlike many animals where adulthood is reached early.
So it's from observations of the ages of donkeys that veterinarians have established a correlation table (age chart) to see an equivalence in human age:
|Real donkey age||1||2||3||4||5||6||7||8||9||10||11||12||13||14||15||16||17||18||19||20|
Life expectancy of the donkey: a donkey can live for about 45 years.
The Donkey Sanctuary is a British charitable organisation devoted to the welfare of donkeys. The charity, which is based near Sidmouth in Devon, England, was founded in 1969.
It is one of the largest equine charities in the world with an annual income and expenditure of £22 million, and its actions are spread in many countries.