The bar chart illustrates the proportion of six different animal species used for testing purposes in the United States.
Overall, rabbits accounted for the largest share of animals involved in testing, with hamsters ranking second. By contrast, sheep and primates represented the smallest proportions, while the remaining species occupied a middle position.
In more detail, rabbits made up the highest percentage, accounting for approximately 39% of the total number of animals used. This was followed by hamsters, which comprised just under 28%. Together, these two species formed a clear majority of animals involved in testing procedures.
At the mid-range level, dogs and pigs showed very similar figures, each representing around 10% of the total. By contrast, primates and sheep were used far less frequently, with both species accounting for less than 10%. Overall, the chart highlights a strong reliance on a small number of species, while the remaining animals were used in considerably lower proportions.