Johns Hopkins Laboratories Are Hell for Monkeys

UN LAB Middleware Label: Title Ends

Sickening photos PETA obtained from U.S. Department of Agriculture (USDA) inspections of Johns Hopkins University (JHU) laboratories show monkeys confined to cramped cages, suffering from untreated medical conditions, and ripping out their own hair. 😡

The photos reveal blatant violations of the federal Animal Welfare Act and prove that JHU treats monkeys like lab tools instead of smart, loving animals who can feel pain, anxiety, and depression.

The USDA found that JHU isolated social monkeys in separate barren metal cages with barely enough room to turn around.

Social monkeys are caged in isolation at JHU, causing them undue stress and mind-destroying frustration, which sometimes results in hair loss, as seen in this monkey.

The monkeys were left to suffer from conditions like alopecia, which causes hair loss. It’s also possible that they tear out their hair due to stress and solitude—monkeys normally groom each other, but in JHU’s labs, they’re forced to live alone. 😭

This is another gentle monkey at JHU whose hair is almost completely gone. The only hair left is on the head and wrists.

Here’s a result of this misery that’s obvious asf: These conditions cause the monkeys psychological trauma. They often pace and bite themselves, desperate for any kind of stimulation. Monkeys caged alone tend to circle, swing, and rock back and forth—clear signs of mental distress.

The public deserves to know what animals endure in university laboratories, including at JHU, and PETA is working to expose the truth. Here are just some of the university’s recent violations of federal animal welfare regulations.

  • February 28, 2023: A dog died from cardiac arrest after experimenters botched a potassium chloride administration.

  • September 27, 2022: Experimenters implanted a tumor in a rabbit, didn’t provide proper vet care, and allowed the animal to become so emaciated that euthanasia was necessary.

  • September 11, 2022: Experimenters left a rabbit used in cancer experiments to suffer with a tumor burden in the liver. They subjected other rabbits to traumatic brain injuries, and the animals experienced painful effects like an infection, an incision bursting open at the skull, and severe neurological distress.

  • June 12, 2022: An experimenter used a pig for testing after the protocol had expired and didn’t submit a renewal application.

  • August 23, 2021: An experimenter used unsterile techniques to cut into monkeys’ skulls, which killed half of them. Lab staff didn’t provide pigs used in experiments with necessary pain relief. They let one pig suffer with both of his elbows broken, without telling vet staff, and eventually killed him.

  • June 10, 2019: A lab worker closed a cage door on a marmoset, leading to hemorrhaging and trauma to the neck, which killed the animal.

  • February 15, 2017: A young macaque died in the outdoor portion of her enclosure after her head became stuck inside a ball with a hole chewed in it. The facility believes she died from a combination of stress and exposure to the cold.

  • July 15, 2016: Eight primates had significant hair loss, and some weren’t given proper treatment.

  • July 12, 2016: Two baboon cages had possible strangulation hazards, two racks of rabbit enclosures had inadequate access to fresh water, and three primates were housed separately with no visual contact with peers. There were also 17 instances of expired medications.

  • January 28, 2015: Staff left a rabbit in a cage that was sent through a high-temperature disinfecting machine. The animal died of asphyxiation.

What You Can Do

JHU experimenters are harming and killing defenseless animals in labs right now. For instance, Shreesh Mysore torments barn owls in gruesome brain experiments. If you’re outraged, we’re right there with you.

The good news? You can channel that anger to get real results. Help us stop animals from suffering by telling JHU to pull the plug on its cruel and worthless experiments immediately:

Christopher S.
Krieger School of Arts and Sciences

Take Action Now!

Fields with an asterisk(*) are required. 

Giving us your date of birth helps us to make sure we send you the most relevant actions to help animals!

Get texts & occasional phone calls for Action Alerts, local events, & other updates to help animals with peta2! (optional)

Sign me up for the following e-mail: