The use of animals heavily impacts the mental health of researchers performing the animal experiments. The animal researchers need to take care of animals but also give pain and sacrifice them at the same time. This circumstance can cause a variety of mental stress to the researchers. The stress generated in the laboratory would not only negatively affect the management of animals and the research results, but also would harm the researchers’ physical and mental health. Because the feeling of sympathy for animals is a natural feature of humanity, psychological stress following a laboratory animal’s death after use is not surprising. It is necessary to revise the relevant laws based on understanding the difficulties of animal researchers in society and to develop related educational programs at the national level to help the psychology and emotions of researchers who conduct animal experiments.

ABSTRACT
INTRODUCTION
THE DILEMMA OF ANIMAL RESEARCHERSAND FACILITY WORKERS
LESSON FROM LIVESTOCK SLAUGHTER ANDBURIAL
SUGGESTIONS
CONCLUSION
REFERENCES

• Na Ahn(Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea)
• Jaehak Park(Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea)
• Sangho Roh(School of Dentistry and Dental Research Institute, Seoul National University, Seoul 08826, Korea) Corresponding author