
Soviet Union
Leonid Firsov (* 1. January 1920; † 1. January 2006) was a ethologist. He was 86 years old. He studied at St. Petersburg I. I. Mechnikov State Medical Academy (SPSMA). He worked at Pavlov Institute of Physiology of the Russian Academy of Sciences. He was awarded the Order of the Patriotic War, 2nd class.