Annual Statistics 2023

The University reports the number of animals that are used in research by species each year.

In 2023, the University carried out 139,881 scientific procedures involving animals. The vast majority of these involved rodents (68%), and fish (31%) (see table ).  

 

SpeciesNumberPercentage
Rodents (mouse, rat, spiny mouse, wood mouse)9476167.7%
Fish (zebrafish, salmon, rainbow trout)4266530.5%
Birds (chickens, quail)15991.1%
Agricultural species (cattle, sheep, pigs)5580.4%
Animals monitored in the wild or captured and released (deer, sheep, wild bird, elasmobranch)2980.2%

These figures are calculated each year based on data from annual returns that are prepared for the Home Office by every Project Licence holder.

2022 statistics

2021 statistics

2020 statistics

2019 statistics

2018 statistics

2017 statistics

2016 statistics

2015 statistics

2014 statistics

 

Severity statistics

Each regulated procedure is assigned a severity which describes the animal's experience. Figures for 2023 are available at the link below. 

Severity Statistics