Lantz’s newt, or the Caucasian smooth newt (Lissotriton lantzi), is an endemic species of the Caucasus. The distribution and abundance of this species are decreasing, especially on the periphery of its habitat. The paper presents the results of our study of reproduction, growth and development of Lantz's newt in artificial conditions. Eight couples of animals were caught on the Strizhament Mountain (the Stavropol region, Russian Federation) in 2015 and 2016. The newt couples were constantly kept in water in plastic containers (one couple in each container).