Vostok programme
Bars (Барс ("pron." "Barss"); "snow leopard") and Lisichka (Лисичка, "little fox") were also on a mission to orbit as a part of the Vostok programme, but died after their rocket exploded 28.5 seconds into the launch on July 28, 1960. Bars was also known as Chayka (Чайка, "seagull").