A bipartisan group of lawmakers is proposing a bill to end the Department of Agriculture’s (USDA) practice of conducting deadly experiments on kittens.

The bill, co-sponsored by Reps. Jimmy Panetta James Varni PanettaOn The Money: McConnell previews GOP coronavirus bill | Senate panel advances Trump Fed nominee who recently supported gold standard | Economists warn about scaled-back unemployment benefits Bipartisan bill introduced to provide tax credit to food and beverage distributors Overnight Defense: US formally rejects Beijing's South China Sea claims | House set to consider defense policy bill next week | 57 injured as firefighters battle warship blaze MORE (D-Calif.) and Brian Mast Brian Jeffrey MastSen. Rand Paul says he and his wife were 'attacked by an angry mob' after Trump speech Florida Republican apologizes after Facebook posts about sex, rape uncovered Most Black women since 2004 running for office this year MORE (R-Fla.), has been championed by the watchdog group White Coat Waste Project, which has run advertisements against such experiments in Maryland.

Reps. Elissa Slotkin Elissa SlotkinWray: Racially motivated violent extremism makes up most of FBI's domestic terrorism cases Overnight Defense: House chair announces contempt proceeding against Pompeo | Top general says military has no role in election disputes | Appeal court rejects due process rights for Gitmo detainees Top general: Military will play no role in resolving any electoral dispute MORE (D-Mich.) and Will Hurd William Ballard HurdHillicon Valley: Oracle confirms deal with TikTok to be 'trusted technology provider' | QAnon spreads across globe, shadowing COVID-19 | VA hit by data breach impacting 46,000 veterans House approves bill to secure internet-connected federal devices against cyber threats House Democrats' campaign arm reserves .6M in ads in competitive districts MORE (R-Texas) also signed on to the legislation, dubbed the Kittens in Traumatic Testing Ends Now Act of 2019, or KITTEN Act. Sen. Jeff Merkely (D-Ore.) introduced companion legislation in the senate Thursday.

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“Currently, the U.S. Department of Agriculture (USDA) performs parasite-related experiments on cats and kittens. This taxpayer-funded testing results in hundreds of kittens bred, fed parasite-infected raw meat, and then killed annually,” Panetta said in a statement.

The agency has reportedly conducted tests in which kittens are bred and infected with a parasite that can cause toxoplasmosis, a certain form of foodborne illness. Scientists then harvest the parasites from the kittens’ stools before euthanizing and incinerating them, according to NBC News.

“This common sense, bipartisan bill will require the USDA to adhere to the same animal welfare standards that the department is charged to uphold," he added. "While I strongly support scientific research, taxpayer money and federal resources should be spent on advancing scientific research in an ethical manner, not on inflicting pain on kittens or killing them after they are used in agency testing.”

Animal rights advocacy groups have claimed that 100 cats annually are killed in USDA experiments, though the agency disputes those figures.

The USDA did not immediately respond to a request for comment from The Hill. A USDA administrator told Congress last year that 2,988 cats have been used "research efforts" since 1982.

The agency has defended its research in the past as “life-saving,” though the American Veterinary Medical Association has said that interacting with cats who have had the parasite is “unlikely to pose a risk” for humans.

The USDA announced last year it is seeking alternatives to cats for its testing.

The Centers for Disease Control says that while over 40 million Americans carry toxoplasmosis without showing symptoms, it could have “severe consequences” for people who are pregnant or have weakened immune systems.