The United States Department of Agriculture (USDA) is the federal organization charged with enforcing the Animal Welfare Act, which sets basic standards of care for certain kinds of animals bred for commercial resale. The USDA admits to a deficient and problematic record in the inspection of dog breeding facilities. There are a greater number of facilities than the number of inspectors to visit these facilities. Often times, breeders are allowed to perform self-inspections. In May 2010, the USDA’s Inspector General issued a scathing 69-page report addressing failures in inspection practices. The report PDF report can be downloaded here .
As a glucocorticoid , the lipophilic structure of prednisolone allows for easy passage through the cell membrane where it then binds to its respective glucocorticoid receptor (GCR) located in the cytoplasm. Upon binding, formation of the GC/GCR complex causes dissociation of chaperone proteins from the glucocorticoid receptor enabling the GC/GCR complex to translocate inside the nucleus. This process occurs within 20 minutes of binding. Once inside the nucleus, the homodimer GC/GCR complex binds to specific DNA binding-sites known as glucocorticoid response elements (GREs) resulting in gene expression or inhibition. Complex binding to positive GREs leads to synthesis of anti-inflammatory proteins while binding to negative GREs block the transcription of inflammatory genes. 
The debate about the safety of vaccines took the forefront in small animal medicine when a possible link was discovered between vaccination and the development of a form of cancer known as sarcomas. Sarcomas are aggressive, locally invasive tumors that seem to form at the site of vaccination in cats. They occur most often with the use of killed, adjuvant vaccines- notably rabies and FeLV. The most common cancer is fibrosarcoma. It usually appears from 3 months to 4 years after vaccination. The prevalence of this problem has not been established, but it may be anywhere between 1:1,000 or 1:10,000 vaccinated cats. A veterinary task force has been formed to research the issue. Treatment is most successful when the tumors are discovered early and surgically removed with a very wide incision. Recurrence is common if the incision is not wide enough to remove all tumor cells. This problem was the catalyst for the American Association of Feline Practitioners to revise its recommendations regarding the frequency and anatomic sites of vaccination, as well as exposure risk assessment of individual animals.