PAAW Act
- Sponsor
- Rep. Mace, Nancy [R-SC-1]
- Committees
- Energy and Commerce Committee (primary)
- Last action
- Jul 23, 2025
Bottom line
The PAAW Act aims to end NIH-funded research causing significant pain to dogs and cats by referencing existing federal animal welfare classifications.
What it actually does
This bill amends the Public Health Service Act to prohibit the National Institutes of Health (NIH) from conducting or funding any research that causes significant pain or distress to dogs or cats. It defines 'significant pain or distress' by referencing categories D and E of the Department of Agriculture's Pain and Distress Categories, which are used to classify the severity of pain experienced by animals in research. The prohibition would take effect 90 days after the bill's enactment.
Proponents argue
Proponents argue that this bill is a crucial step towards reducing animal suffering in federally funded research, aligning scientific practices with evolving ethical standards for animal welfare. They contend that modern alternatives to animal testing exist or can be developed, and that the use of dogs and cats in experiments causing significant pain is often unnecessary and inhumane, representing a waste of taxpayer dollars on outdated methods.
Opponents contend
Opponents might argue that prohibiting such research could severely impede critical biomedical advancements, particularly in areas like neurological disorders, cardiovascular diseases, and cancer, where dog and cat models are considered essential due to their physiological similarities to humans. They may contend that existing regulations and oversight are sufficient to minimize animal pain and distress, and that a blanket prohibition could force valuable research overseas or halt it entirely, ultimately harming human health.
The bill is exceptionally short and clear, making it very accessible for any reader to understand its core purpose and provisions quickly.
Section 2(a), adding Section 447E(a) to the Public Health Service Act
Prohibition on Research Causing Significant Pain or Distress
This provision establishes a new section in the Public Health Service Act that explicitly forbids the Director of the National Institutes of Health (NIH) from either directly conducting or financially supporting any research projects that inflict significant pain or distress upon dogs or cats. This means that federal funds administered by the NIH cannot be used for such animal experiments.
Supporters argue
Supporters argue this prohibition is a moral imperative, reflecting a societal shift towards greater compassion for animals. They believe it will encourage the development and adoption of more ethical and potentially more effective non-animal research methods, ultimately leading to better science without animal suffering.
Critics contend
Critics contend that this prohibition could cripple vital areas of biomedical research, particularly those requiring complex physiological models that dogs and cats uniquely provide. They argue that such models are indispensable for understanding and treating human diseases, and that existing ethical guidelines already minimize pain, making a blanket ban counterproductive to public health.
Tradeoffs
This provision directly balances animal welfare concerns against the potential for scientific advancement that relies on animal models. It creates a tension between ethical treatment of animals and the perceived necessity of certain animal research for human health breakthroughs.
Section 2(a), adding Section 447E(b) to the Public Health Service Act
Definition of 'Significant Pain or Distress'
This section defines what 'research that causes significant pain or distress' means for the purpose of the prohibition. It specifically includes any study that is assigned a 'pain category D or E' by the Department of Agriculture (USDA). These categories are established under the Animal Welfare Act and classify the level of pain or distress an animal experiences during research, with D and E representing more severe levels of pain or distress, often without pain relief.