US Statistics

Animals used in research in US 2015 by species

In 2015 US government statistics put the number of laboratory animals used in research at 767,622, an 8% drop from 2014. The above graph shows the breakdown of different species used. It is important to note that these statistics do not include rats, mice, birds or fish, as these animals are not covered by the Animal Welfare Act – though they are still protected under other regulations.

Animal Research in the USA in 2015

Table 1 – Animals used in research in the US in 2015 – Click to Enlarge

Precise figures for the number of mice, rats, fish and birds used in research do not exist and thus it is not possible to accurately estimate the total number of vertebrates used in research. Across the EU, 93% of research is conducted on animals which are not counted under the US Animal Welfare Act. If the same was true in the US then the total number of animals used in research would be approximately 11 million, however this is only an estimate and we have previously suggested the total figure could be as high as 25 million.

Given the assumptions made above on the number of other species used, it likely that dogs, cats and non-human primates together account for 1% or less of the animals used in research every year.

Number of Animals Used Annually For Research in the US 1973 - 2015

Graph 2 – Trend in number of animals used in research in the US, 1973 – 2015 – Click to Enlarge

Government statistics show that the use of non-rodent animals has been declining over the past two decades. Since 1985 the use of animals has more than halved in the US. This includes a fall in the number of dogs from over 200,000 in 1979, to around 60,000 in 2015. Some of this fall is likely to reflect a movement towards the use of genetically modified mice.

Animals Used by Humans in Numbers in US

Graph 3 – Animals killed for different purposes – Click to Enlarge

Let us put the number of animals used in perspective. Scientists in the US use approximately 11-25 million animals in research, of which only less than 1 million are not rats, mice, birds or fish. We use fewer animals in research than the number of ducks eaten per year in this country. We consume over 1800 times the number of pigs than the number used in research. We eat over 340 chickens for each animal used in a research facility, and almost 9,000 chickens for every animal used in research covered by the Animal Welfare Act. For every animal used in research, it is estimated that 14 more are killed on our roads.

USDA Annual Reports on Animal Usage in Research:


Graph 1 / Table 1:
(1) USDA Annual Report Animal Usage Statistics 2015

Graph 1 & 2:
(1) AWA Reports, 1973-2015 (see 2011-2013 here)

Graph 3:
(1) AWA 2010 Report
(3) Wall Street Journal, August 1, 2002. “In the Headlights: As Man and Beast Clash on Highways, Both Sides Lose.
(4) National Agricultural Statistics Service 2007 –