Maryland 2026 Regular Session

Maryland House Bill HB666

Introduced
1/30/26  
Refer
1/30/26  
Report Pass
4/8/26  
Engrossed
4/9/26  
Refer
4/10/26  

Caption

Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)

Impact

If enacted, HB666 will significantly alter the existing state laws governing the treatment of animals in research and testing environments. The law emphasizes the importance of adopting humane practices by ensuring the humane treatment of animals and prioritizing the adoption of those animals no longer needed for research. Furthermore, it establishes that research and testing must primarily utilize alternative methods rather than traditional animal testing, reflecting a shift toward more ethical scientific practices.

Summary

House Bill 666, known as the Animal Research Modernization and Best Practices Act of 2026, is a legislative effort aimed at reforming the practices surrounding the treatment of dogs and cats in research and testing facilities. The bill prohibits these facilities from using certain animals for testing purposes and outlaws specific procedures, including devocalization surgeries. Additionally, it mandates that when a research facility no longer requires an animal for testing, they must take reasonable steps to allow for that animal’s adoption, thus enhancing the welfare of these animals.

Sentiment

The sentiment surrounding HB666 has generally been positive among animal welfare advocates, who view the legislation as a substantial step towards the humane treatment of testing animals. These supporters argue that the bill reflects society's evolving values regarding animal rights and the necessity of ethical standards in scientific research. Opposition may arise primarily from entities within the scientific community that are concerned about potential limitations on research methodologies and the implications for necessary testing.

Contention

Despite its objectives, the bill has faced some contention, particularly concerning its restrictions on traditional testing methods. Critics argue that a blanket prohibition on these methods could hinder important medical and scientific advancements. Additionally, the expectations for reporting and transparency introduced by HB666, including annual submissions detailing the adoption of released animals, may present operational challenges for some testing facilities. The balance between protecting animal welfare and ensuring scientific progress remains a central theme in the discussions regarding this legislation.

Companion Bills

MD SB423

Crossfiled Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)

Previously Filed As

MD SB537

Research Facilities and Testing Facilities That Use Animals - Adoption and Reporting Requirements

MD SB536

Research Facilities and Testing Facilities That Use Animals - Regulation

MD SB535

Research Facilities and Testing Facilities That Use Animals - Licensing and Regulations

MD SB253

Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements

MD HB62

Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements

MD SB152

Criminal Law - Crimes Relating to Animals - Conviction and Sentencing

MD HB89

Criminal Law - Crimes Relating to Animals - Conviction and Sentencing

MD HB513

Crimes Relating to Animals - Restrictions on Keeping Roosters

MD SB375

Crimes Relating to Animals - Restrictions on Keeping Roosters

MD HB1267

Patuxent Research Refuge and Beltsville Agricultural Research Center - Zoning Classification (Protecting Patuxent Research Refuge Act)

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