In 2003, a PETA investigation into Columbia University
revealed a lack of basic veterinary care for monkeys and baboons. Sick and dying animals were simply left in their cages without care or painkillers after surgical procedures. The studies involving these animals did not even purport to have any scientific usefulness or validity. Topics under scientific investigation included: effects of stress on menstruation and effects of massive doses of cocaine and nicotine on pregnant monkeys. 
Columbia psychiatrist Suzette Evans receives $500,000 per year in government grants to study the effects of cocaine and heroin on the menstrual cycles of monkeys. Her "experiments" involve the use of cruel and stressful restraint chairs as well as injections and blood draws. Columbia also uses more than 250 dogs per year for "painful and distressing tests".
In 2004, complaints about Dr. Mehmet Oz’s dog experiments were cited in a report from an internal investigation into allegations of poor animal care made by Dr. Catherine Dell’Orto, a post-doctoral veterinarian. 
See also individual reports of Dr. Oz's dog experiments. 
According to the report, "highly invasive and stressful experiments" on dogs were performed without a "humane end point." AWA violations included a litter of whelped puppies killed by painful cardiac injection:
"The screams of these puppies could be heard through closed doors. All of these puppies, lying in a plastic garbage bag, were killed in the presence of their litter mates."
Subsequent applications for grants to the NIH by Dr. Oz have been denied. In 2004, Columbia paid $2,000 in fines to the USDA