Currently, there are 33 known species of guenon monkeys, making them the most species-rich of Africa's mainland primates.
Like other forms of vivisection, experiments on monkeys should be replaced with non-animal methods that provide results directly relevant to humans.
"Monkeys certainly have emotions and probably the ability to display empathy," Heinrich says.
"The magnitude of the immune responses observed in the vaccine recipients were less than those observed in monkeys that were protected from experimental Ebola virus infection, but we don't fully understand what degree of immunity humans require in order to protect them from infection.
Finally, you'll visit the Taj Mahal and ruined city of Fatehpur Sikri, where monkeys now rule.
The BUAV investigated the laboratory mentioned and uncovered disturbing evidence of how those monkeys suffered severely.
In the footage, captured in Kibale national park in south Uganda, the cat stalks and rushes a group of red colobus monkeys before appearing to beat a retreat.
Among the shortlisted artists exhibiting was a young man who made evanescent little sculptures – monkeys, rabbits, squirrels – out of the fluff he scratched up from a newly laid carpet using his fingernails.
Pen pushers, bean counters, faceless bureaucrats, stuffed shirts, spreadsheet monkeys, grey suits … are all terms that I have heard applied to the national health service's finance staff.
Perhaps one day our grandchildren will say, hang on, so as well as going to stare at monkeys in cages, people used to eat something called a shepherd's pie?
Loutolim is my favourite, surrounded by waterfalls, lush vegetation, whispering monkeys and fruit plantations.
