Humane advocates descended upon Lawyers Mall on Valentine’s Day to “show the animals love.” The rally, organized by the Humane Society of the United States and other groups, demonstrated the strong, bipartisan public support for key animal welfare bills before the Maryland legislature this session.

WASHINGTON — On January 1, California’s 2018 ballot measure Proposition 12, which set landmark prohibitions on the sale of food products from farm animals locked in cruel and extreme confinement, will be fully implemented in the state. Proposition 12’s egg and veal provisions have been in place for...