The Club of the Young Biologists of the Zoo (CYBZ) was founded in the Moscow zoo in 1924. It is one of the oldest circles of such kind in Russia, the graduates are widely known not only in our country, but also worldwide. Perhaps there is no branch in biology, where the CYBZ's graduates would not work. However, the word "graduate" is not popular in CYBZ: everyone, who has ever engaged in the circle, names himself "CYBZ-person" all his life.

CYBZ was organised due to the initiative of the former zoo director, professor of the Moscow University М.М.Zavadovskiy. The scientific director of Moscow Zoo Pyotr Aleksandrovich Manteifel was the founder of the circle. The CYBZ's founders wanted to attract young people to the zoo problems. On April, 9th, 1924 the first meeting was held, where the Charter was predicated. The executive authority of CYBZ belonged to the elected Bureau, but the supreme power was exersized by the common meeting. On such meetings new members are accepted in CYBZ, the member's reports on their observations are presented and discussed, the circle internal problems are solved. Such democratic traditions are maintained in CYBZ since the moment of its foundation.

CYBZ history is enreached with interesting events: in 1929 young biologists with P.A.Manteifel ahead were the first in the world to breed sables in captivity and now the sable is on the CYBZ's label; In 30s CYBZ-members have pressed authorities for the organization of Kiyovo-lake reserve near Moscow, the nesting place of gulls.