It's been revealed that 25,000 animals died during research and teaching at Otago University in 2009 and 2010.
That number's expected to increase significantly when statistics are collated for last year.
Otago uses all sorts of animals in its research including mice, rats, guinea pigs, rabbits, sheep, pigs, goats, pigeons and fish.
Deputy vice chancellor Professor Richard Blaikie says many animals used for biomedical research studies are needed for tissue analysis.
All research at the university that involved the animals is carried out under very strict ethical guidelines.
Photo: Getty Images