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The Animal Protection Litigation section conducts precedent-setting legal campaigns on behalf of animals in state and federal courts around the country. With a staff of 13 lawyers located in Washington D.C., New York, San Francisco and Seattle, a network of over 1,000 pro bono attorneys and dozens of active cases, The HSUS has the largest Animal Protection Litigation program in the country. See our Victories

  • Shannon Johnstone/For The HSUS

Victory Against Puppy Mills in Chicago

Building on The HSUS's legal work against puppy mills, the Chicago City Council voted to restrict the retail sale of dogs obtained from large-scale commercial breeders. Read more

Litigation news


  • May 30, 2017

    Supreme Court rejects challenge to California’s landmark egg sales law

    In an important outcome for farm animal protection, the Supreme Court of the United States denied a petition for certiorari by six ag-state attorneys general and governors that sought to overturn California’s landmark egg sales law, AB 1437.

  • May 24, 2017

    Where we are

  • November 29, 2016

    California court upholds ban on state ivory and rhino horn trade

    The Los Angeles Superior Court has upheld California’s ban on trade in ivory and rhino horn, rejecting claims that the ban was unconstitutional. The Ivory Education Institute – a group promoting ivory use – challenged the law in 2015.

  • November 23, 2016

    Michigan court rules 2014 wolf hunting law unconstitutional

    Today, the Michigan Court of Appeals ruled that a 2014 state law passed to circumvent a citizen vote blocking a proposed Michigan wolf hunt is unconstitutional. The law would have enabled state wildlife officials to resume a wolf hunt if the species were dropped from federal Endangered Species Act protections in the Great Lakes region.

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