Research

Animal Pain Research: Understanding What Animals Feel

Animal pain research has transformed our understanding of how animals experience suffering, with profound implications for welfare standards.

Key Facts

The grimace scale has been validated for mice, rats, rabbits, horses, and cattle
Fish show endogenous opioid responses to painful stimuli similar to vertebrate pain systems
Crustacean pain research has driven legal recognition of sentience in several countries
Zebrafish are increasingly used in pain research as they share key pain pathway genes with humans
Neural correlates of consciousness have been mapped in birds and mammals with similar architecture

Welfare Considerations

Pain research has established that the capacity for pain is ancient and widespread across the animal kingdom. The same molecular pain pathways are present in fish, crustaceans, and mammals. The behavioral responses, endogenous analgesic systems, and neural activity patterns during painful stimuli are remarkably similar across vertebrates. This scientific consensus is transforming welfare standards for animals previously assumed to feel little.

What You Can Do

Support animal pain research funding through advocacy and donations
Advocate for pain research findings to be incorporated into welfare standards
Engage with the scientific literature on animal pain through accessible science journalism
Support the Center for Pain Studies and animal pain research institutions
Donate to organizations translating pain research into welfare policy applications